Best used for variety of cutting tasks that include drywall, boxes, ropes, rubber, carpets, leather, PVC, linoleum and more, this heavy-duty blade made from high carbon steel is compatible with all Spec Ops Utility Knives. The precision-honed edge makes it a perfect razor for any standard box cutter. This 10 pack is perfect for a fast refill or replacement when quickly changing out blades on any jobsite. With each purchase made, we support our nation's heroes by donating 3% of proceeds to veteran and first responder causes.