Uxcell a11030800ux0453 1/4" Shank 7mm Spanner Hex Nut Driver Bit (2 Piece) Product Name : hex driver bit; hex socket size : 7mm/ 9/32" Hex shank size : 6.3mm/ 1/4"; overall size : 13 x 65mm/ 0.5" x 2.6" (d*l) Material : metal Weight : 56.5G Package : 2 x hex driver bit