5-pc BOLT-GRIP Deep Well Sets, 3/8 in Drive, Carbon Steel

Features: Deep well design fits over exposed studs and reaches recessed fasteners | Reduced profile head enables use in confined spaces | 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 | 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 | High carbon steel ensures longer life and greater durability | Universal lobular design fits all types of fasteners | Set includes plastic case