EXTREMELY SAFE TO USE - This knife cutter is built with high quality steel handle and anti-slip ABS grip which provides more security for you. The ergonimic curve of the handle fits your hands. Also our knife is built with back lock design that safely keeps your blades in place when in use, which also allows you one-hand easy opening and closing. Your brand new work knife comes with an easy blade release mechanism that allows you to safely change the blades and helps prevent injury. Just push the head-cover of the blade and drop-down the cover of the blade. Our knife is compatible with most standard sized utility blades for extra convenience.