1/4-inch Shank 3/8 Inch Hex Socket Nut Setter Driver Bit Adapter 5pcs Main Material: Metal; Package Content: 5 x Hex Nut Driver Product Name: Hex Nut Driver; Weight: 179g Main Color: Gray; Overall Size: 65 x 15mm/2.6" x 0.6"(L*D) Socket Type: Hex Socket; Shank Size: 6.35mm / 1/4" Hex Socket Size: 3/8"