Please note, this item ships from an international seller. Expected delivery is 10-15 days. Features: Material: The screw extractor is made of high-speed steel. High hardness, durable and easy to remove damaged screws. Expansion: Magnetic bit holders help absorb new torque screwdrivers with high torque. Quick change bit holders solve the problem that the bit length is not enough to achieve the purpose you want to drill. Widely used: suitable for the most common drills and screws or bolts of various sizes, such as hexagon socket bolts, machine screws, square head bolts, wood screws, hexagon bolts, sheet metal screws Note: When removing damaged screws, it is best to install them on an electric hand drill (for basic electric hand drills) rather than a hammer drill. In addition, it must be used in reverse during the whole process, and reversed at low speed, otherwise it will be injured. Specification: Material: alloy steel Size: as shown Outer box size: 13.3 * 10 * 3.3cm Package Included: 22pcs broken wire remover How to use the screw extractor? Step 1: First install the size of # 6- # 10 in the slot adapter, and then install it on the extension holder. (Other sizes can be directly connected to the extension bit holder) Step 2: Use a drill (Dr) to drill the broken screw. Step 3: Change to using the same size extract (Ex) bits. Step 4: Use an electric drill in the opposite direction to remove the broken drill bit. screw