The komelon 30m100ft 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 to last up to 15 times longer than standard tapes it also features a true zero claw end hook accuracy ec class ii