Screw Extractor Set Hex Head Multi-Spline Easy Out Bolt Extractor Set, Chrome Molybdenum Alloy Steel Rounded Bolt Remover 🔦【39-PIECE Extractor/Drill Bit Set】: 10pcs most commonly used multi-spline screw extractors,and 10pcs tough left hand cobalt drill bits,5pcs spiral screw extractors.13pcs most commonly used Bolt extractors. 1pcs Hex adapter. NOTE: Cobalt drill bits should not be used for stainless steel. 🔦【Left Hand Cobalt Drill Bits】: the Reverse Spiral Groove is designed to buckle downward to provide maximum grip. for use with screw extractors to Removes broken studs, bolts, socket screws. 🔦【Screw extractor and drill bit kit】: Easy out rusty or damaged screws. Screw extractor kit:1-6#, Drill bit kit: Drill bit kit: 3/32", 1/8", 3/16",7/32", 1/4", 9/32", 5/16",11/32",3/8",13/32". 🔦【Multi-spline Screw Extractor】: Our screw extractor is High hardness good toughness, Easy out spiral flutes embed themselves to increase grip as resistance increases.Multi-spline extractors in sizes: 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32". 🔦【13Pcs Multi- Size Stripped Lug Nut Remover】:The Bolt Nut Extractor Set Size---3/4''(19mm),11/16'',(17mm),5/8''(16mm),9/16''(14mm),13mm,1/2'',(12mm),7/16''(11mm),(10mm) ,3/8'',(9mm),5/16''(8mm),1/4'' .which can meet various needs that are usually required, whether it's car repair or home repair.