Features:* The cr-mo socket adapter has high hardness and is not easy to carry.* The hexagon socket is suitable for general handheld electric drills.* The same size screws are connected to the hexagon adapter, working with electric drill, drilling screws on board.* Internal thread for double-ended screw (hanger screw), external thread for screw. Specifications:Material: Chrome Vanadium Stainless Steel Upper: (6.35mm) 1/4 Inch Hex HandleSize: (As the picture shown)Inner and Outer Teeth: m6x1, 0/m8x1, 25/m10x1.5Double Head Screw: m6x1, 0/m8x1, 25/m10x1, 5Quantity: 1pcsPackage Included:1 × Socket Adapter (Optional)Please Note:-Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!-Manual measurement, please allow 1-3mm error. Thank you for your understanding.