This is a swivel bit holder for impact drivers! The swivel head allows for use in tight spaces! It's useful for machine installation, relocation, and maintenance in factory plants! Compatible with Makita, Hitachi, Panasonic, RYOBI, etc.! makita18v, 14.4v, 40v Impact driver, bits, sockets Construction industry, architects, construction sites, general contractors, interior decorators, electricians, equipment installers, heavy machinery movers, rigging, machinery and equipment installation work, heavy objects, power tools