Reverse spiral flutes for maximum gripping power.
Universal shape fits metric & fractional sizes.
1/4in hexagon shank suitable for use with power drills and nut drivers.
Durable high carbon steel for longer life.
Sizes: 1/2in, 7/16in, 10mm, 3/8in, 5/16in, 1/4in, 3/16in.
Supplied in carrying case.