About this item 【WHAT YOU GET】Save Time and Effort! 4-IN-1 EXTRACTOR KIT-13Pcs multi-spline screw extractors, 16Pcs left hand cobalt drill bits, 6Pcs spiral screw extractors, 13Pcs Bolt extractors and 1Pc 3/8" to 1/4" hex adapter. 【High and Resistant Material】The left hand drill bits are made from 4341 cobalt fortified HSS material, which increases durability and service life.This screw extractor has strong wear resistance and clear chip removal. HSS is harder, tougher and easier to drill, turn and remove damaged screw or bolts than other materials. 【Screw extractor and drill bit kit】Easy out rusted or damaged screws. Screw extractor set:#1,#2,#3,#4,#5,#6. Drill bit kit: 5/64",7/64",1/8",5/32", 3/16",7/32", 1/4", 9/32",19/64" 5/16",11/32",3/8",13/32",7/16",15/32",1/2". 【Multi-spline Screw Extractor】Easy out 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"，7/16",15/32",3/4". 【13Pcs Multi- Size Stripped Lug Nut Remover】Ez out bolt extractor set---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'' . Overview Material: 4341 HSS, Chrome Molybdenum Steel Brand: WYBENZ Tool Flute Type: Spiral Set Name: 49PCS Screw Extractor Bolt Extractor Set with Left Hand Drill Bit Set Number of Packs: 1