Description:The file has been heat-treated and the surface has been blackened, which makes the file high in hardness, rust-resistant and durable. When a thread is damaged and cannot be used anymore, we can file repeatedly along the thread direction with a file until the deformed part is removed. We have different specifications of files corresponding to different specifications of screws, which are practical and you can choose freely.These indispensable files restore damaged external threads on studs, bolts, screws, plumbing pipe and pipe fittings. This file is exquisite and small, easy to carry and use.It is made of rubber and vanadium alloy steel.The groove type of this file is straight groove, the size of non-slip rubber sleeve is 10cm, the file length is 27.3cm, the width is 7cm, and the height is 3cm.It is used to repair broken screw threads.Item Name: Thread Repair FileMaterial:Rubber,Chrome Vanadium Alloy SteelStyle: ModernType: StandardSize Details:Thread Pitch: Metric Thread (A Type): 0.75mm, 1.0mm, 1.25mm, 1.5mm, 1.75mm, 2.0mm, 2.5mm, 3.0mmBSP/PF Parallel Pipe Thread (B Type): 11mm, 12mm, 14mm, 16mm, 19mm, 20mm, 22mm, 28mmSAE/UN American Thread (C Type): 12mm, 13mm, 14mm, 16mm, 18mm, 20mm, 24mm, 28mmBSW/BSF Imperial Whitworth Thread (D Type): 11mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 26mmNotes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.Package Includes:1 X Thread Repair File1 X Anti-slip Rubber Sleeve