Feature: 1. Save Time and Effort: Broken bolt extractor kit are used to remove stuck, broken or screwed tools. The stripping bolt remover and extractor easily removes damaged screws, studs, bolts and other accessories. 2. Unique Design: Reverser drill bit is design with a 135 degree angle, which makes drill bit easier to cut into the workpiece and has less axial resistance. This design can not only increase the working length of the cutting edge, but also reduce the thickness of the cutting layer, which making the cutting effect better and without damaging other working areas. 3. Multi-Purpose: Simple drill extractor is multipurpose on your life. Bolt extractors that remove broken screws, whether working on wood or metal, are ideal for construction, automotive, home DIY projects or for industrial use.These extractors are excellent if you are working in a production environment and using screw head bolts. 4. Premium Material: Left hand drill bits are made from 6542 cobalt fortified HSS material, which increases durability and service life. 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. 5. Wide Size Selection: The 11-Piece screw extractor set contains 5-piece left-hand HSS cobalt drill bits size include 1/8\", 5/32\", 3/16\", 1/4\", and 19/64\". 5-piece spiral screw extractors sizes include 1 , 2 , 3 , 4 , and 5 . 1 piece-quick change adapter. 6. Easy To Storage: Screw extractors are all placed in a storage box, easy to access at any time. Portable storage case that provides excellent protection and against lost screw extractors. Specification: Features: Save Time and Effort: Broken bolt extractor kit are used to remove stuck, broken or screwed tools. The stripping bolt remover and extractor easily removes damaged screws, studs, bolts and other accessories. Unique Design: Reverser drill bit is design with a 135 degree angle, which makes drill bit easier to cut into the workpiece and has less axial resistance. This design can not only increase the working length of the cutting edge, but also reduce the thickness of the cutting layer, which making the cutting effect better and without damaging other working areas. Multi-Purpose: Simple drill extractor is multipurpose on your life. Bolt extractors that remove broken screws, whether working on wood or metal, are ideal for construction, automotive, home DIY projects or for industrial use.These extractors are excellent if you are working in a production environment and using screw head bolts. Premium Material: Left hand drill bits are made from 6542 cobalt fortified HSS material, which increases durability and service life. 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. Wide Size Selection: The 11-Piece screw extractor set contains 5-piece left-hand HSS cobalt drill bits size include 1/8", 5/32", 3/16", 1/4", and 19/64". 5-piece spiral screw extractors sizes include 1 , 2 , 3 , 4 , and 5 . 1 piece-quick change adapter. Easy To Storage: Screw extractors are all placed in a storage box, easy to access at any time. Portable storage case that provides excellent protection and against lost screw extractors. Specifications: Material: HSS Item Size: 19/64" Drill Bit: 9.3 * 0.8 cm / 3.66 * 0.31inch 1/4" Drill Bit: 9.1 * 0.7 cm / 3.58 * 0.27 inch 3/16" Drill Bit: 8.7 * 0.7 cm / 3.42 * 0.27 inch 5/32" Drill Bit: 8.4 * 0.7 cm / 3.3 * 0.27 inch 1/8" Drill Bit: 7.7 * 0.7 cm / 3.03 * 0.27 inch Adapter: 6 * 1.6 cm / 2.36 * 0.62 inch 1 Screw Extractor: 5.2 * 0.7 cm / 2.04 * 0.27 inch 2 Screw Extractor: 6.1 * 0.7 cm / 2.4 * 0.27 inch 3 Screw Extractor: 6.6 * 0.7 cm / 2.59 * 0.27 inch 4 Screw Extractor: 7.6 * 0.7 cm / 2.99 * 0.27 inch 5 Screw Extractor: 8.5 * 0.7 cm / 3.34 * 0.27 inch Item Weight: 310.7g / 10.96oz Package Size: 14 * 10.3 * 3.7 cm / 5.51 * 4.05 * 1.45 inch Package Weight: 400g / 14.11oz Package List: 5 * HSS Drill Bits 5 * Screw Extractor 1 * Adapter 1 * Storage Box Package List: 5 * HSS Drill Bits5 * Screw Extractor1 * Adapter1 * Storage Box