7-pc POWER-GRIP Sets, 1/4 in Drive, Carbon Steel

Features: Designed for use with power tools | 1/4" hex shank fits most power tools | 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