This Stanley 10788 Instant Change Retractable Blade Utility Knife features an instant change tool, a free push button blade change for hassle free blade changes. It's interlocking nose design holds blades firmly in place, preventing nose spread and body separation which might otherwise cause blades to break-loose and cause injury.This knife has a long-lasting, strong, and durable construction featuring a cast metal core with bi-material soft panels for a comfortable grip. There is an integrated string and foil cutter so there is no need to expose the blade for these simple jobs. It has a convenient hang hole for lanyards, tethers, and safe storage and the handle will store up to 5 blades. Ideal for general purpose, DIY and construction cutting applications.This knife accepts most types of replacement Stanley utility blades. Specification: Length: 180mm.