3 Piece-1/4" 5/16� & 3/8� Magnetic Nut Driver Set-Hex Combi Power Drill Socket Chrome vanadium steel nut driver set for use with power drills 1/4" hex drive Includes sizes 6mm, 8mm and 10mm Compatible with all 6 35mm chucks SIZE: L x W x H (mm) 0.087 x 0.146 x 0.022 WEIGHT: 0.12 t0555