The Stanley FatMax® Snap-Off cartridge blade knife has die-cast aluminium housing for strength and durability. With a wide 25mm blade and a locking knob, it is ideal for heavy-duty, intensive applications. The stainless steel cartridge holds 4 heavy-duty blades 25mm (1 in) wide. Technical Specs Blade width: 25mm. Length: 210mm. Weight: 360g.