What's the secret to removing the old blade and inserting a new one? Does it slide in and out from the back end?

I've never had to remove the old blade and replace it. I just use pliers to snap off the dulled little piece which reveals a new, sharp edge. Once the whole blade is used up, I usually just toss it. I don't know if it's replaceable or not.

What do you do when it jams after you replaced the blade? This didn’t happen the first time I replaced the blade

Just take it apart and clean it with soap and water and a small brush (like a toothbrush). This is a precision made tool, and by and far the best in it's class I might add. The specs are tight, so if a little debris (such as dirt or pocket lint), gets into the sliding track grooves, it can block the blade from extending. Remember to air dry the parts separately before re-assembling. With proper cleaning and care, this high quality, heavy duty tool will dutifully serve you for a lifetime. I keep this very model on me at all times (L-500GRP).

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Heavy-Duty Aluminum Die-Cast Anti-Slip Contoured Grip Screw-Lock Utility Knife (L-550GP)

Product ID: 254862993

Details

Brand
NT Cutter
Colour
grey
Handle material
Aluminum
Item length
1.8
Material
Stainless

🔩Screw-lock system for secure blade hold

♻️100% recycled aluminum die-cast grip

🛠️18mm heavy-duty snap-off carbon steel blade

€ 20.78

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔪 Cut sharp, grip smart, work sustainably.

SAFETY FIRST ALWAYS - Innovative screw-lock system secures the blade firmly, while the built-in blade snapper lets you refresh your edge safely and quickly.
PRECISION MEETS POWER - Engineered with a high-quality carbon steel blade for ultimate sharpness and edge retention, ensuring every cut is clean and effortless.
ECO FRIENDLY CRAFTSMANSHIP - Constructed from 100% post-consumer recycled materials with a durable electrical-acrylic metal coating—cutting-edge performance with a conscience.
VERSATILITY FOR EVERY TASK - Ideal for cutting cardboard, rubber, leather, linoleum, carpet, and more—your go-to tool for DIY, industrial, and professional use.
GRIP THAT WORKS AS HARD AS YOU DO - Ergonomic aluminum die-cast contoured grip with anti-slip coating, perfect for gloved or bare hands—comfort and control in every project.

The NT Cutter L-550GP is a premium heavy-duty utility knife featuring an 18mm carbon steel snap-off blade, a screw-lock system for blade security, and an ergonomic aluminum die-cast grip made from 100% recycled materials. Designed in Japan for professionals and DIY enthusiasts alike, it offers superior cutting precision, safety, and eco-conscious durability across a wide range of materials.

Specifications

ASIN	B009F6C9F4
Best Sellers Rank	#58,441 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #204 in Utility Knives
Blade Material	ALUMINUM
Brand Name	NT Cutter
Color	grey
Country of Publication	Japan
Customer Reviews	4.6 4.6 out of 5 stars (108)
Global Trade Identification Number	00030203900357
Handle Material	Aluminum
Handle Type	Manual-Retractable
Item Length	1.8 Centimeters
Item Weight	0.24 Pounds
Manufacturer	NT Incorporated
Manufacturer Part Number	L-550GP
Material Type	Stainless Steel
Model Number	L-550GP
Product Style	Aluminum Die-Cast Anti-Slip Contoured Grip with Screw-Lock
UPC	030203900357
Unit Count	1 Count

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€ 20.78

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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