ThePENTA-DRIVERTMrange of products features theTri-Penta WrenchTM. This underground utility wrench combines three everyday functions into one convenient tool. The ¾” Penta Socket opens transformers and switch gears. The addition of a high visibility patent pendingSpeed SleeveTMhelps linemen open those transformers and switch gears up to 2X faster than standard penta sockets or wrenches. It also comes with 2 other tools built into the handle – the integrated Lid Lifter lifts hand hole lids and the 3/8” Screwdriver is great for opening secondary or primary doors.