24721037633, 394100
T394100 Reverse spiral flutes for maximum gripping power. Universal shape fits metric and fractional sizes. 1/4 hexagon shank suitable for use with power drills and nut drivers. Durable high carbon steel for longer life. Overall length: 27mm.7 Piece Contents: 1/2, 7/16, 9/16, 3/8, 5/16, 1/4, 3/16. Supplied in carrying case.