Product Description: Puller 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) Package Include: 5 x Drill Bits 5 x Extractor 1 x Tap Fixing 1 x Storage Case Made of chrome-vanadium steel, high hardness, rust-proof, strong and durable The diameters of the drill bits and the diameters of the recommended extraction of broken screws are engraved on the case Extractors and drill bits with high gripping force Ideal for removing screws, studs, bolts, fastener damaged, rusty or bare metal water tap and water tube etc. Drill bits can also be used to drill holes on wood, metal, plastic, brick and wall etc.