Professional screw extractor set for commercial or occasional use 1/2in drive impact screw extractor setMulti spline extractors to remove broken studs, pipes, set screws, grease fittings etc... This kit allows you to extract bolts which are corroded or seized and need to be removed without damaging the casing or threadDeep screw extractors for access in restricted hard to reach areas1/2in drive so will fit any 1/2in drive ratchets, extensions, power bars etc... Impacted bits so suitable for use with high torque tools such as impact gunsManufactured from CR-mo HRC 48-50 steel for maximum strength and durability7pc set ranges in sizes from 3mm – 12mm in diameterWill easily bite into and grip the softer boltsLonger flutes provide easier extractor startingLeft hand spiral design for extra gripping powerSET INCLUDES THE FOLLOWING1.3mm extractor for extracting fixings 3-5mm in diameter 2.4mm extractor for extracting fixings 4-6mm in diameter3.5mm extractor for extracting fixings 5-8mm in diameter4.6mm extractor for extracting fixings 6-9mm in diameter5.8mm extractor for extracting fixings 8-11mm in diameter6.10mm extractor for extracting fixings 10-13mm in diameter7.12mm extractor for extracting fixings 12-15mm in diameterComes in a blow molded case for easy storage and transportationSIMPLE TO USE1.Drill a hole into the fastener2.Choose a suitable bolt extractor and insert into the hole3.Use a ratchet or spanner to turn the bolt extractor anticlockwise for easy and effective removal of broken items.