Bit adapter (1/2") 12.5 mm square drive to (1/4") 6.3 mm
Hexagonal drive for accepting commercially available bits. With this adapter, 1/4" hexagon bits can be operated with cordless screwdrivers with 1/2" square drive. Chrome vanadium steel, chrome-plated finish with retaining ball. Particularly suitable for drywallers, carpenters, roofers and garden landscaping.