General description Made of chrome vanadium steel, this 11-piece damaged screw extractor set is designed for high hardness, rust resistance, and durability. The set includes drill bits and extractors that provide excellent gripping force, making it ideal for removing damaged, rusted, or stripped screws, studs, bolts, fasteners, metal water taps, and water tubes. Additionally, the drill bits can be used for drilling holes in wood, metal, plastic, brick, and walls. Technical specifications Extractor Diameter: #1 for 1/8"-1/4" (3-6mm) #2 for 1/4"-5/16" (6-8mm) #3 for 5/16"-7/16" (8-11mm) #4 for 7/16"-9/16" (11-14mm) #5 for 9/16"-3/4" (14-18mm) Drill Diameter: #1: 5/64" (2.0mm) #2: 7/64" (3.0mm) #3: 5/32" (4.0mm) #4: 1/4" (6.5mm) #5: 19/64" (7.5mm) Compatibility and accessories 5 x Drill Bits 5 x Extractors 1 x Faucet Fixing 1 x Storage Box