Product design upgrade: The new design is more convenient to install and disassemble, and can be used directly with the drill. And added an adapter to extend the drill interface. Design For: The screw remover kit is designed to remove stripped screws and bolts. It removes damaged bolts, nuts, and screws even if they are stripped, rusted, or freeze. High Quality: The new high-speed steel material will be harder, tougher, and easier to drill, greatly increasing using life and durability. Portable Size: Screw Extractor Set Includes: A portable storage Box it includes Bolt extractor Size 1 , 2 , 3 , 4 , 5 . Left-hand drill sizes include 1/8inch, 5/32inch, 3/16inch, 1/4inch, 19/64inch. Colour:As Shown Material:high speed steel Package Contents: 1 x Screw Extractor Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.