Faithfull Safety Trimming Knife with Auto Retracting Blade is ideal for use in retail, warehouse and factory environments. Its blade holder is spring-loaded and 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 stop any sideways blade movement, a soft grip section for comfort and a hole for attaching to a lanyard. No tools are required for blade replacement, a wing screw on the side of the knife enables easy opening. Accepts standard heavy-duty trimming knife blades. Supplied with an heavy-duty blade