This is a set of broken screw bolts and water pipe extractors. Damage, rust and adhesion allow you to remove the screws and water pipes that are not lost by regular tools. Available in 8 sizes and works with wood and machine screws, as well as flat screws, hex screws, or paintover screws. Some of the common drivers can be removed and will not disassemble damaged bolts, screws, bolts or pipes. Reverse screw bit easily removes screws, bolts, studs, and threaded pipe fittings. Made of good quality carbon steel material, advanced and durable. Specifications: Size: #1 (Diameter 0.2 x Total Length 2.0 inches (4.0 x 52 mm), #2 (Diameter 0.1 x Total Length 2.3 inches (4.5 x 58 mm), #3 (Diameter 0.2 x Total Length 3.3 inches (6.5 x 65 mm), #7 (Diameter 0 x Total Length 3.7 x Total Length) (2 x 3.8 x 3.8 inches (2 inches (2 x Total Length) 0 mm) / Material: High Carbon Steel ENN LLC is shipped in our original packaging and backed by a 30-day return policy so you can buy with confidence.