--- product_id: 64297503 title: "KLRStec Professional Caulking Gun 25:1 – Heavy Duty Mastic & Silicone Gun | 4000N pressing force for all 310ml cartridges – drip-stop lever, 360° rotating aluminium barrel, hardened steel rod, 729g" price: "€ 79.62" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.hr/products/64297503-klrstec-professional-caulking-gun-25-1-heavy-duty-mastic-silicone store_origin: HR region: Croatia --- # 25:1 Thrust Ratio for max power Tempered aluminum & steel build Compatible with all standard 310ml cartridges KLRStec Professional Caulking Gun 25:1 – Heavy Duty Mastic & Silicone Gun | 4000N pressing force for all 310ml cartridges – drip-stop lever, 360° rotating aluminium barrel, hardened steel rod, 729g **Price:** € 79.62 **Availability:** ✅ In Stock ## Summary > 🛠️ Power, precision, and durability in one sleek tool—don’t get left behind on your next project! ## Quick Answers - **What is this?** KLRStec Professional Caulking Gun 25:1 – Heavy Duty Mastic & Silicone Gun | 4000N pressing force for all 310ml cartridges – drip-stop lever, 360° rotating aluminium barrel, hardened steel rod, 729g - **How much does it cost?** € 79.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/64297503-klrstec-professional-caulking-gun-25-1-heavy-duty-mastic-silicone) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Crafted from corrosion-resistant tempered aluminum and steel for unmatched durability on any job site. - • **Pro-Level Control:** State-of-the-art transmission mechanics ensure precise bead application, perfect for DIYers and pros alike. - • **Effortless Precision:** 25:1 thrust ratio delivers up to 4000N power for smooth, controlled sealant flow with minimal hand fatigue. - • **Lightweight Yet Sturdy:** Weighing just 789g, this caulking gun balances stability and comfort for extended use without strain. - • **Universal Compatibility:** Designed to fit all standard 10oz/310ml silicone and adhesive cartridges—one tool for every project. ## Overview The KLRStec Professional Caulking Gun features a high 25:1 thrust ratio delivering up to 4000N of force, making it ideal for dispensing even the thickest sealants with ease. Constructed from tempered aluminum and steel, it offers exceptional durability and corrosion resistance. Compatible with all standard 10oz/310ml cartridges, this lightweight yet robust tool is engineered for both professional craftsmen and serious DIY enthusiasts seeking precision and long-lasting performance. ## Description Product Description Strong 25:1 thrust ratio Maximum power Gentle on the wrist, even with highly viscous sealants Durable and robust Material & Workmanship Durable and corrosion-resistant materials ensure long-term functionality. Maximum comfort Ergonomics & ease of use The ergonomic handle and lightweight yet robust design increase comfort during use Cartridges up to 310ml Compatibility Suitable for all cartridges up to 310ml accurate workmanship Precise results Super easy handling gives a feel for precise dosing and optimum results. What is a caulking gun and what is it used for? A caulking gun is a tool for the clean and controlled application of sealants, adhesives or silicone from standard cartridges. It is often used in the construction, sanitary and DIY sectors. What is a caulking gun and what is it used for? A caulking gun is a tool for the clean and controlled application of sealants, adhesives or silicone from standard cartridges. It is often used in the construction, sanitary and DIY sectors. What types of cartridge guns are there? There are manual, battery-powered and compressed air-powered cartridge guns. Manual models are the most common, while battery-powered and compressed air-powered models have been developed for professional use. What types of cartridge guns are there? There are manual, battery-powered and compressed air-powered cartridge guns. Manual models are the most common, while battery-powered and compressed air-powered models have been developed for professional use. What does the power ratio of a cartridge press mean? The force ratio describes the ratio of the manual force applied to the actual pressure force on the cartridge. A higher ratio makes it easier to work with viscous materials, as less force is required. What does the power ratio of a cartridge press mean? The force ratio describes the ratio of the manual force applied to the actual pressure force on the cartridge. A higher ratio makes it easier to work with viscous materials, as less force is required. What advantages do high-quality cartridge guns offer? High-quality models have a better force ratio, making it easier to process viscous materials. They enable even dosing and require less effort. What advantages do high-quality cartridge guns offer? High-quality models have a better force ratio, making it easier to process viscous materials. They enable even dosing and require less effort. Which cartridge sizes fit into a cartridge gun? Standard cartridge guns are designed for 310 ml cartridges. However, there are also models for larger or special cartridges. Which cartridge sizes fit into a cartridge gun? Standard cartridge guns are designed for 310 ml cartridges. However, there are also models for larger or special cartridges. KLRStec – Caulk Gun for Maximum Performance KLRStec Professional 25:1 Caulking Gun – Maximum Power, Precision & Control! Experience effortless precision with the KLRStec Professional 25:1 Caulking Gun , designed for professionals and DIY enthusiasts who demand the best. With its powerful 25:1 thrust ratio , this heavy-duty tool allows you to apply even the thickest sealants, adhesives, and silicones with minimal effort. Say goodbye to hand fatigue and uneven application – this caulking gun delivers smooth, consistent flow every time. Built with reinforced steel construction , the KLRStec caulking gun is engineered for maximum durability and stability , ensuring reliable performance even in the toughest jobs. The ergonomic, non-slip grip provides superior handling and comfort, making long working sessions effortless. Equipped with a drip-free mechanism , this caulking gun prevents excess material from oozing out, keeping your work clean and professional. Whether you're sealing, bonding, or filling gaps, the KLRStec 25:1 Caulking Gun ensures a perfect finish with precision and control . Upgrade your toolkit with KLRStec – where power meets precision! #KLRStec #CaulkingGun #ProfessionalTools KLRStec Black Series KLRStec Professional KLRStec Premium KLRStec PRO XL KLRStec – Tools for Professionals & DIYers Crafting Excellence Discover more tools from KLRStec When you choose KLRStec, you're choosing innovation and reliability. Our tools are always cutting-edge, ensuring you're equipped with the best for every job. Experience the difference with KLRStec – where trust meets quality, and tools become your trusted companions for life. Review: Top quality build and powerful squeeze - With caulk guns I've always just bought the cheap ones but after a while they just jam up, snap and are hard work. This product is superb, very little effort to squeeze out whatever you are using. The build quality is top notch aswell. Wish I'd bought one of these years ago instead of struggling Review: Solid - Would Buy Again - Well made, smooth operation, worth the extra cost. ## Features - THE PERFECT CAULK GUN FOR YOUR PROJECT: Functionality has top priority with our Caulking Guns – Developed for DIY and Professional Craftsmen! State-of-the-Art Transmission Mechanics enable Precise Work and Sealing - MINIMAL EFFORT – Extremely easy handling due to a Maximum Power Transmission of 4000N (25:1 Thrust Ratio) Our Professional Caulking Gun model is particularly recommended for regular users. Even the most viscous Sealants can processed easily - MAXIMUM DURABILITY - Our Caulk Guns only use durable and corrosion-resistant Materials to ensure long-term Functionality and to withstand any Construction Site - HIGH-QUALITY PROCESSING - True to the motto "quality instead of quantity", our Hand Caulking Guns are mainly made of Tempered Aluminum, which ensures Stability despite the low weight! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B079J4YGHK | | Best Sellers Rank | 74,349 in DIY & Tools ( See Top 100 in DIY & Tools ) 110 in Caulking Guns | | Brand | KLRS | | Colour | black | | Customer Reviews | 4.5 4.5 out of 5 stars (3,043) | | Date First Available | 21 April 2018 | | Item Weight | 789 g | | Manufacturer | KLRS | | Manufacturer Part Number | 8719326214825 | | Material Type | Aluminium steel construction | | Model Number | fh-55 | | Product Dimensions | 35.7 x 21.8 x 7.6 cm; 789 g | | Sheet Size | A4 | | Size | 35.7 x 21.8 x 7.6 cm | ## Images ![KLRStec Professional Caulking Gun 25:1 – Heavy Duty Mastic & Silicone Gun | 4000N pressing force for all 310ml cartridges – drip-stop lever, 360° rotating aluminium barrel, hardened steel rod, 729g - Image 1](https://m.media-amazon.com/images/I/71Dxb9viLUL.jpg) ## Questions & Answers **Q: What is a caulking gun and what is it used for?** A: A caulking gun is a tool for the clean and controlled application of sealants, adhesives or silicone from standard cartridges. It is often used in the construction, sanitary and DIY sectors. **Q: What types of cartridge guns are there?** A: There are manual, battery-powered and compressed air-powered cartridge guns. Manual models are the most common, while battery-powered and compressed air-powered models have been developed for professional use. **Q: What does the power ratio of a cartridge press mean?** A: The force ratio describes the ratio of the manual force applied to the actual pressure force on the cartridge. A higher ratio makes it easier to work with viscous materials, as less force is required. **Q: What advantages do high-quality cartridge guns offer?** A: High-quality models have a better force ratio, making it easier to process viscous materials. They enable even dosing and require less effort. **Q: Which cartridge sizes fit into a cartridge gun?** A: Standard cartridge guns are designed for 310 ml cartridges. However, there are also models for larger or special cartridges. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Top quality build and powerful squeeze *by A***R on 18 September 2025* With caulk guns I've always just bought the cheap ones but after a while they just jam up, snap and are hard work. This product is superb, very little effort to squeeze out whatever you are using. The build quality is top notch aswell. Wish I'd bought one of these years ago instead of struggling ### ⭐⭐⭐⭐⭐ Solid - Would Buy Again *by R***P on 14 September 2025* Well made, smooth operation, worth the extra cost. ### ⭐⭐⭐⭐⭐ My experience *by S***T on 1 March 2026* Good 👍 ## Frequently Bought Together - KLRStec Professional Caulking Gun [25:1 Thrust Ratio] Heavy Duty Caulk Gun for All Standard 10oz / 300ml / 1/10 Gallon Sealant and Adhesive Cartridges - KLRStec Professional Caulking Tool [100% Stainless Steel] 4 in 1 Caulk Remover Tool Kit - Grout Remover and Finishing Tool – Professional Multitool for perfect Silicone Joints DIY Sealer and Scraper - Saker Silicone Caulking Tools-3 in 1 Sealant Finishing Tool Grout Remove Scraper (Stainless Steelhead),Caulk Remover Glass Glue Angle Scraper for Bathroom,Kitchen,Floor,Window,Sink Joint,Frames Seal --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/64297503-klrstec-professional-caulking-gun-25-1-heavy-duty-mastic-silicone](https://www.desertcart.hr/products/64297503-klrstec-professional-caulking-gun-25-1-heavy-duty-mastic-silicone) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-03*