18mm Snap-Off Knife Cutter — Chemically Blacked Metal Frame with Contoured Grip & 8-Segment Sharp Blade

Not every tool needs to be complicated. Sometimes you just need a knife that's well made, sits comfortably in your hand, and holds a sharp edge long enough to get the job done properly. This 18mm snap-off knife cutter does exactly that — nothing fancy, nothing unnecessary, just a reliable cutting tool that earns its place on the workbench or in the toolbox.

The body is built around a strong chemically blacked metal frame, which gives it a rigidity that cheaper all-plastic knives simply can't match. The metal frame keeps the blade locked firmly in the channel, so there's no flex or wobble when you're working through thicker materials — the kind of movement that makes straight cuts harder and increases the risk of the blade snapping unexpectedly. The black chemical finish also gives it a degree of corrosion resistance, which matters when a knife ends up getting left in a damp van or toolbox.

The handle is a contoured plastic grip in a high-visibility red and black finish. The shape is designed to sit naturally in the hand with your fingers falling into comfortable positions without you having to think about it. The thumb slide advances the blade smoothly along the channel and locks at your preferred extension depth with a satisfying click.

The blade itself is an 18mm segmented snap-off design with 8 scored sections. When the front edge dulls — which will happen, especially if you're cutting abrasive materials like plasterboard or rough cardboard — you score along the nearest snap line with a pair of pliers and break it off cleanly to reveal a fresh, sharp section underneath. It takes about ten seconds and gets you back to work immediately.

Key Features:

• Strong chemically blacked metal frame for rigidity and blade stability
• 18mm wide segmented snap-off blade — 8 sections per blade
• Contoured plastic handle for a secure, comfortable grip
• Smooth thumb-slide blade advance with locking mechanism
• High-visibility red and black colour — easy to spot on a busy worksite
• Suitable for cardboard, wallpaper, carpet, vinyl, foam, plastic sheet, and general cutting tasks
• Compact size fits easily in a work belt, apron pocket, or toolbox

Ideal For: Decorators, carpet fitters, warehouse workers, tradespeople, and anyone who does regular cutting work and needs a dependable snap-off knife to hand.

Specifications:

• Blade Width: 18mm
• Blade Type: Snap-off segmented
• Blade Segments: 8 per blade
• Frame: Chemically blacked metal
• Handle: Contoured plastic
• Colour: Red and black