Buy STANLEY STHT10323-800 18mm Plastic Slide Lock Snap Off Knife (Black) from Amazon. STANLEY gives to you a convenient hand-held cutting tool that is specially designed to help you in your tasks. It last longer and gives you an instant sharp edge with a set of progressively divided blade, all you have to do is simply snap away the blunt edge with the help of a cutting plier or blade snapper. Shop now