Dido 4PCS Damaged Screw Remover Set Extractor Set Stripped Bolt Extractor

Specification: Quantity: 4pcs(1# 2# 3# 4#). 1 # disembowelled diameter: 3-5 mm. 2 # disembowelled diameter: 4-8 mm. 3 # disembowelled diameter: 5-10 mm. 4 # disembowelled diameter: 6-12 mm. Material: alloy steel (S2). Hardness: 58 °-- 60 °. Features: Made of durable hardened steel Easy to use just two easy steps! Screw head scratching force ber better. Removes any stripped screw in 10 seconds or less! The 4 piece screw extractor set works with any drill and any screw size or bolt. Works on wood and machine screws as well as philips flat hex or painted over screws. Application: suitable for electric tools with chucks or adapters extract damaged screws quickly and easily. Package included: 1 x Set (4pcs) Screw Remover with black box