Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si DIY watch repair tool hand high speed wire attack kit. lightweight, portable and safe. Multi-coated optical elements light transmission and brightness Tap wrench handle can be separated into two segments, can be firmly set the screw extractor, remove the damaged screws, bolts, etc. Perfect for repairs and mechanically specified metric threading. Standard: Metric Tap size: M1, M1.2, M1.4, M1.6, M1.7, M1.8, M2, M 2.5, M 3, .5 Tap Twisted Handle: M1-M8 Number of Threads Per Inch: 0.01 Application: Woodworking / Machinery Instructions: When the bolts due to corrosion and other reasons, in accordance with the diameter of appropriate specifications of the drill in the center of the broken boltsdrilling a hole, then select the corresponding screw extractor to insert, with winder or wrench counterclockwise. Will be able to remove the bolts. In addition, inner hex (or outer-hexagonal) 's six head screw have loosen failure, also can be in this way. Material:metal colour:Silver Package Contents: 10 * Screw Taps 1 * Tap Twisted Wrench Handle Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.