WORKPRO Folding Utility Knife Retractable Blade Box Cutter Heavy Duty Al Die-casting Handle with Belt Clip Retractable blade in 4 extended locking positions; Lock-back design safely locks the blade into place; Push the button for tool free and easy blade change; Anodized aluminum handle with ergonomic design for ease of use; Accepts all standard utility blades. Please Check and Observe Local Laws and Regulations Before Purchase of this Item Press the button of the blade; Release the blade; Change the blades; Accepts all standard utility blades 4-position retractable blade to meet your cutting needs Back-lock: push here for folding back the blade, safe and convenient Stainless steel belt clip for easy access