---
product_id: 48736745
title: "WD-40 Specialist Penetrant Spray 400ml"
brand: "wd-40 specialist"
price: "€ 23.51"
currency: EUR
in_stock: true
reviews_count: 8
category: "Wd 40 Specialist"
url: https://www.desertcart.hr/products/48736745-wd-40-specialist-penetrant-spray-400ml
store_origin: HR
region: Croatia
---

# 360° Smart Straw control 400ml precision spray -20°C to +90°C range WD-40 Specialist Penetrant Spray 400ml

**Brand:** wd-40 specialist
**Price:** € 23.51
**Availability:** ✅ In Stock

## Summary

> 🛡️ WD-40 Specialist: The secret weapon every pro’s toolkit can’t afford to miss!

## Quick Answers

- **What is this?** WD-40 Specialist Penetrant Spray 400ml by wd-40 specialist
- **How much does it cost?** € 23.51 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/48736745-wd-40-specialist-penetrant-spray-400ml)

## Best For

- wd-40 specialist enthusiasts

## Why This Product

- Trusted wd-40 specialist brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Deep Rust Penetration:** Unlock seized bolts and corroded joints faster than ever with pro-grade formula.
- • **Precision Application:** 360° valve and Smart Straw let you target tight spots or cover broad areas with zero waste.
- • **Multi-Surface Versatility:** Safe and effective on metal, titanium, rubber, plastic & PVC for all your projects.
- • **Extreme Temperature Resilience:** Performs reliably from freezing cold to scorching heat, perfect for any environment.
- • **Long-Lasting Corrosion Defense:** Creates a water-resistant barrier that extends maintenance intervals and protects your gear.

## Overview

WD-40 Specialist Penetrant Spray is a professional-grade lubricant designed to rapidly free rusted and seized components. Its low surface tension formula penetrates deep into corroded joints, working safely across multiple surfaces including metal, titanium, and plastics. Engineered for extreme conditions, it operates from -20°C to +90°C and features a 360° Smart Straw for precise application. Beyond quick rust release, it deposits a durable, water-resistant barrier to protect against future corrosion, making it an essential maintenance ally for mechanics, engineers, and industrial professionals.

## Description

From the manufacturer

Review: Very impressive - Have always used wd40 anyway but this is my new favourite, works very well on everything, should last a long time too.
Review: Worth Having In Tool Kit - A good product beats ordinary WD40. Works fast, read label as can be harmful to eyes so wear appropriate safety kit.

## Features

- Causes skin irritation.
- Extremely flammable aerosol.
- May be fatal if swallowed and enters airways.
- May cause drowsiness or dizziness.
- Pressurised container: May burst if heated.
- Toxic to aquatic life with long lasting effects.
- Penetrating Oil for Rust: The low surface tension formula penetrates deep into rusted threads and corroded joints, rapidly freeing seized bolts, nuts, and fixings where general-purpose sprays fail, the professional's choice from WD-40 Specialist.
- Multi-Surface Rust Release: Loosens rusted hinges, stuck locks, and stiff chains while safe for use on metal, stainless steel, titanium, rubber, plastic, and PVC, performing reliably from -20°C to +90°C.
- Lasting Corrosion Protection: Deposits a water-resistant barrier that delivers anti-rust and corrosion protection to guard bearings, pipes, conveyor belts, and exposed fixings against future build-up to extend service intervals between maintenance.
- Professional-Grade Performance: Engineered for mechanics, engineers, and professionals who demand consistent results, this industrial-strength penetrating spray operates across a wide temperature range for workshop, garage, and field applications.
- Precision Smart Straw Control: Reach tight spaces and awkward angles with the integrated Smart Straw for pinpoint accuracy, or flip down for broad coverage, the 360° valve enables spraying in any orientation, reducing product waste and time.
- Specialist Maintenance System: Pre-clean with WD-40 Specialist Degreaser spray, apply Penetrant spray to free seized components, then protect with White Lithium Grease for lasting lubrication, or add Cutting Oil for drilling and metalwork.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B006UCJ5NU |
| Best Sellers Rank | 1,079 in DIY & Tools ( See Top 100 in DIY & Tools ) 10 in Lubricants |
| Brand | WD-40 Specialist |
| Brand Name | WD-40 Specialist |
| Container Type | Tin |
| Country of Origin | United Kingdom |
| Customer Reviews | 4.8 out of 5 stars 1,170 Reviews |
| Flash Point | 44 Degrees Celsius |
| Global Trade Identification Number | 05032227443488 |
| Included Components | 1 x WD40 Specialist Penetrant Aerosol 400Ml |
| Item Form | liquid |
| Item Type Name | Specialist Fast Release Penetrant with Smart Straw 400 ml |
| Item Weight | 374 Grams |
| Item weight | 374 Grams |
| Liquid Volume | 0.4 Litres |
| Liquid volume | 0.4 Litres |
| Manufacturer | WD-40 Company |
| Material | Grease , Metal, Plastic |
| Model Number | 7780195-HHW |
| Number of Items | 1 |
| Package information | Tin |
| Part Number | 443488-BPSSA02589 |
| Product Warranty | Na. |
| Recommended Uses For Product | Automotive, Marine, Industrial, Nuts, Bolts, Screws, Locks, Pipes, Taps |
| Recommended uses for product | Automotive, Marine, Industrial, Nuts, Bolts, Screws, Locks, Pipes, Taps |
| SAE J300 Viscosity Grade | 0W |
| Specific Uses For Product | Car,Wheel,Window |
| UPC | 013523004028 616268302482 |
| Unit Count | 400.0 millilitre |
| Upper Temperature Rating | 90 Degrees Celsius |
| Viscosity | 0w |

## Product Details

- **Brand:** WD-40 Specialist
- **Item weight:** 374 Grams
- **Liquid volume:** 0.4 Litres
- **Material:** Grease, Metal, Plastic
- **Package information:** Tin

## Images

![WD-40 Specialist Penetrant Spray 400ml - Image 1](https://m.media-amazon.com/images/I/61gRmO22SaL.jpg)
![WD-40 Specialist Penetrant Spray 400ml - Image 2](https://m.media-amazon.com/images/I/71dCMOScI+L.jpg)
![WD-40 Specialist Penetrant Spray 400ml - Image 3](https://m.media-amazon.com/images/I/71rRAEL-EwL.jpg)
![WD-40 Specialist Penetrant Spray 400ml - Image 4](https://m.media-amazon.com/images/I/716o31AwodL.jpg)
![WD-40 Specialist Penetrant Spray 400ml - Image 5](https://m.media-amazon.com/images/I/71r9cQlxv+L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very impressive
*by A***R on 13 May 2026*

Have always used wd40 anyway but this is my new favourite, works very well on everything, should last a long time too.

### ⭐⭐⭐⭐⭐ Worth Having In Tool Kit
*by T***N on 29 April 2026*

A good product beats ordinary WD40. Works fast, read label as can be harmful to eyes so wear appropriate safety kit.

### ⭐⭐⭐⭐⭐ Works fast on stuck bolts – a must-have in the toolbox
*by C***A on 30 September 2025*

I recently added the WD-40 Specialist Penetrant Spray to my toolkit, and it has already proven its value. I used it on a couple of stubborn, rusted bolts in my bike and an old garden tool, and within minutes the parts loosened up with very little effort. The spray penetrates quickly and doesn’t have the messy residue that some similar products leave behind. The nozzle gives a controlled spray, so you can target tight areas without wasting product. The smell is noticeable but not overpowering, and it doesn’t linger for long. One thing to keep in mind is that this is designed mainly as a penetrant and not as a long-term lubricant, so after freeing stuck parts it’s best to apply something else if you want ongoing protection. Overall, this is an effective, reliable product that does exactly what it promises. Definitely worth keeping on hand for household repairs, bikes, cars, or any mechanical projects.

## Frequently Bought Together

- WD-40 Specialist Penetrant Spray - Professional-Grade Lubrication for Mechanics and Industrial Applications - 400ml - Rust-Busting Formula
- WD-40 Specialist Silicone Spray Lubricant 400ml Can - Versatile All-Weather Protection for Extended Tool Life, Repels Moisture, Dust, and Grime - Smart Straw Applicator Included
- WD-40 Multi-Use Smart Straw 450ml Spray Aerosol Can Clean Rust Lubricant, blue

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**Shop now:** [https://www.desertcart.hr/products/48736745-wd-40-specialist-penetrant-spray-400ml](https://www.desertcart.hr/products/48736745-wd-40-specialist-penetrant-spray-400ml)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-06-23*