Reverse spiral flutes are designed to bite down to provide maximum gripping power
High carbon steel ensures longer life and greater durability
Universal lobular design fits all types of fasteners
When you are faced with a rounded off, rusted-tight or painted over bolt, bolt extractors will break it free
Set includes plastic case 3/8" square drive for use with hand ratchets, impact wrenches, and air ratchets; hexagonal flats for use with flat wrench, pliers, adjustable wrench, sockets or Vise-Grip locking pliers. Set includes bolt extractors to remove bolt sizes: 8mm, 10mm, 13mm, 19mm, 5/16", 11/16", 3/4" in drive size 3/8".