The Komelon Unigrip Long Steel Tape has a heavy-duty ABS open 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 to last up to 15x longer than standard tapes. It also features a true zero claw end hook. Accuracy Class II This Komelon Unigrip Long Steel Tape has metric measurements on the front and imperial measurements on the back. Blade Length 50m/165ft Blade Width 13mm Accuracy Class II