The Komelon 50m/165ft UniGrip Steel Tape has a heavy duty ABS frame with a built in wire guard for added protection. The 3x high speed gear mechanism and dual rollers guide the blade and prevent twisting. It has a dura NY nylon coated steel blade, with metric measurements on the front and imperial measurements on the back. The coating helps it last up to 15 times longer than standard tapes. It also features a ture zero claw end hook.