Specifications: Drill Bit Set Size: 0#, 1#, 2#, 2#, 3#, 4#, 51mm 0#: Suitable Thread Thread Thread Diameter: 2-3mm, 1#: Suitable Thread Diameter: 3-5mm, 2#: Suitable Thread Diameter: 4-8mm, 2#: Suitable Thread Diameter: 4-8mm, 2#: Suitable Thread Diameter: 4-8mm, 3#: Suitable Thread Diameter: 5-10mm, #4. : Suitable screw straight. Type: 0.2 - 0.5 inches (6 - 12 mm); Material: Alloy Steel (HSS/4341); Surface Treatment: Titanium Coating; Features: 1. Note: Not compatible with stainless steel screws. 2. Simply attach it to your existing impact screwdriver, and you can easily turn the screw, which greatly reduces your work time. 3. Proper processing technology, it can obtain special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, non-magnetic. 4. Suitable for removing screws and damaged screw nuts on hardwood or wooden floors. 5. Titanium Coating: This drill bit set has excellent abrasion resistance, heat resistance, and sharpness, and is extremely durable. 6. Easily remove various screws such as broken screws, fixed screws, special screw heads, bolts, etc. 7. If you are a beginner to use, the drill speed should be too fast, and you need to turn it slowly at a slower speed. In general, the harder the material, the slower the drill speed. 8. Very compact size and lightweight, so it wont take up much space when put in your tool box. 9. Both ends of the tool have a drill and screw, which is very convenient. Drill a hole on the screw with a flat hole and slowly pull it out with the screw, or use it with electric tools. 10.Screw Picker Kit is a must have for professionals, hobbyists, mechanics, DIY, artisans, workshops, and all home tool boxes. 11. If the slow rotation is loose, please replace the screw head with larger size to remove the screws. Package: Drill Bit Set Screw Removal x 6