Our screw holders are aluminum and block and screwdriver Bit are steel and block and long-lasting use, hard to deformed or damage, can work for long time The screw Rings not only can work perfectly with 1/4in / 6.35mm Hexagon screwdriver and power Bit, but also perfect for diverses types of screwdriver Bit. It's well-suited for tasks like furniture assembly, vehicle repair You can place this screwdriver bit into the screwdriver holder, and you'll be able to retrieves screws. You can use it with confidence These screwdriver rings grip screws and secure tighten drill bit slippage. They significantly work efficiency and effectively address various work challenge The package includes 6pcs of screw Rings holders and 2pcs of screwdriver Bit. Please note that this product is not suitable for children aged 13 and under, Manufacturer: TOWARDSNAN