15pcs Hex Magnetic Power 8mm 5/16 Socket Adapter Drill Bit Nut Driver Set 1/4...
For use with hexagonal head self drilling screws. Hex Socket feature magnet for holding the screws in place. Hex Socket Size : 8mm/ 5/16"; Hex Shank Size : 6.35mm/ 1/4". Overall Size : 12 x 41mm/ 0.47 x 1.6" (DL); Color : Gray.