uxcell 1/4 3/8 1/2-inch Square Driver Hex Power Drill Bit Socket Adapter 3pcs Product Name: Hex Power Drill Socket; Net Weight: 103g Package Content: 3 x Hex Power Drill Socket; Material: Chrome Vanadium Steel Color: Gray Square Drive Size: 12.7mm/ 1/2", 9.53mm/ 3/8", 6.3mm/ 1/4" Hex Shank Size: 6.3mm/ 1/4"