The Lock Technology Lug Ripper II removes seized or frozen lug nuts off of the rim of a vehicle in 11 minutes or less, without damaging the tire rim of a vehicle, according to the company. The specialized drill bit is made of tungsten steel and has four carbide cutters designed for speed and durability. The Lug Ripper II is designed for 17mm, 19mm, 21mm and 23mm lug nuts. The cutting head or threads are designed for cutting out the inside of the lug nut only. The center of the shaft is hollow to allow the stud to go inside during the drilling process. The mounting end has a round shaft that will be inserted into a standard low rpm 1/2" air drill. The Lug Ripper II comes in a blow molded case and has a lifetime drill guide warranty.