【EXTENSION 】The magnetic bit holder with adjustable composition collar can help absorb the high torque of newer impact drivers. The quick-change bit holder solves that bit wasn't long enough to reach what you were trying to drill. /li> 【CHROME VANADIUM STEEL 】The high quality chrome vanadium steel screwdriver has undergone an overall secondary heat treatment and has a hardness of HRC62-63. It is durable and can be widely used in all drills. 【EASY TO USE 】In easy steps, only need a drill, choose a smaller extractor than the damaged screw, can easily remove the screw, please be sure to reverse the drill during this process. 【APPLICABLE 】The screw remover is compatible with all brands of power drills and screwdriver handle tools, suitable for all homeowners, carpenters, mechanics, artists, hobbyists, etc. 【WIDE USE 】High precision hole position, ideal damaged bolt and screw removal tools, suitable for most common drill bits and various sizes of screws or bolts, such as Allen bolts, machine screws, lag bolts, wood screws, hex bolts, sheet metal screws. Magnetic bit holder with composition adjustable collar can help absorb the high torque of new impact drivers.Quick-change bit holder solves that bit wasn't long enough to reach what you were trying to drill. The high quality chrome vanadium steel screw driver has undergone the overall secondary heat treatment and has a hardness of HRC62-63. Feature: 【EASY TO USE 】In easy steps, only need a drill, choose a smaller extractor than the damaged screw, can easily remove the screw, please be sure to run the drill upside down during this process. 【APPLICABLE 】The screw stripper is compatible with all brands of power drills and screwdriver handle tools, suitable for all homeowners, carpenters, mechanics, artists, hobbyists, etc. Specification: Condition: 100% Brand New Model: RT-Q06 Material: Chrome Vanadium Steel Weight: approx. 233g / 8.2oz Diameter Length Application Range 4.0mm / 0.2inch 5.1cm / 2.0inch 3-6mm 4.5mm / 0.2inch 5, 8cm / 2.3inch 6-8mm 6.5mm / 0.3inch 6.6cm / 2.6inch 8-11mm 7.5mm / 0.3inch 7.5cm / 3.0inch 11- 14mm 11.0mm / 0.4in 8.4cm / 3.3in 14-18mm 12.0mm / 0.5inch 9cm / 3.5inch 18-20mm Package List: 6 * Screw Extractors 1 * Storage Box Notice: Do not skew when using the key, you must be forced to uniform.