- 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".