Irwin Hanson 5-pc Lugnut Specialty Sets Designed specifically to remove lugnuts. When you are faced with a rounded-off, rusted-tight or painted-over bolt, bolt extractors will break it free. Reverse spiral flutes are designed to bite down to provide maximum gripping power. 3/8 in. square drive for use with hand ratchets, impact wrenches, and air ratchets. Universal lobular design fits all types of fasteners Pack of 1