* The STANLEY Interlock 18mm cutter features a patented lock device for the spare blade inside the cutter. * The cast metal housing is solvent-resistant. * No tools are required to change the spare blade. * Metal design, durable and lightweight. * InterLock nose: extra strong, the cutting blade is not pushed up. * Easy blade change system, no tools required. * Locking screw for safety and precision during tough cutting applications. * Easy to clean.