Description:1. [Material Hardened steel treatment, high hardness, good toughness, wear-resistant and durable.2. [Product Content Size: full length 50mm, 60mm, 61mm, 65mm, 74mm, 83mm. 6pcs in a set with different specifications to meet various needs.3. [Wide range of application] Suitable for stainless steel 8.8-12.9 grade bolts, no need to worry about damaging screws or tools.4. [Hexagonal Shank Diameter Design] Stable support, high speed rotation, uniform force, suitable for all kinds of drills.5.[How to use the removal screw kit The screw removal kit is a special tool for removing broken bolts, crushed screws and screw heads. It is suitable for hardwood and wooden tables to remove screws, broken screws and nuts. The screw removal kit is suitable for broken.