The Faithfull Professional Safety Utility Knife has a spring-loaded blade holder that automatically retracts when the slider button is released to keep the blade out of harm's way. The die-cast metal body has an interlocking nose design to reduce sideways blade movement, a dual compound ABS and TPR soft grip for comfort, and a hole for attaching to a lanyard. No tools needed for blade change. Simply unscrew the side button and pull the knife sides apart to reveal the internal 5 blade storage compartment and change blades. Ideal for use as a box cutter in retail, warehouse and factory environments. Accepts standard heavy-duty trimming knife blades. Supplied with 5 x SK5 steel blades. Specification: Retracted Length: 150mm (6in).