Feature: 1. Assemble wire thread inserts in the threaded holes of workpieces such as aluminum alloys to form high-strength, wear-resistant female threads. 2. The use of wire thread inserts as a repair method can economically and effectively repair threaded holes. 3. Convenient and quick to use wire thread inserts to convert between metric and inch threaded holes. 4. With a large number, can meet your use and replacement needs, very practically. 5. Strict quality control and quality assurance, high safety factor, can be used with peace of mind. Specification: Item Type: Thread Repair InsertsMaterial: SUS304 Model: M8 x 1.25 Thread Specification: M8 x 1.25mm Outside Diameter Before Installation: Approx. 9.8 ~ 10.1mm / 0.39 ~ 0.4in Drilling Drill Bit Diameter for Installation: Approx. 8.3mm / 0.3in 1D 1.5D 2.5D Length After Installation: Approx. 8mm / 0.3in12mm / 0.5in 20mm / 0.8in 1D 1.5D 2.5D Number of Turns Before Installation: 4.8 7.7 13.5 Thread Protective Sleeve Model Specification Description: For Example: M3x0.5X1.5D, which means that after the screw set is completed, the internal thread is M3, the pitch is 0.5, and the length is 1.5D (length refers to 1.5 times the diameter, that is, 1.5x3=4.5mm ), the length here refers to the length after installation. Wire thread inserts are also called threaded sheaths, stainless steel threaded sleeves, and wire sleeves. They are a new type of female threaded fasteners made of high-strength, high-accuracy diamond-shaped cross-section steel wire; in aluminum alloy, zinc alloy , copper, plastic, synthetic cardboard and other low-strength engineering materials can significantly improve thread strength and wear resistance.. Package List: 50 x Thread Repair Inserts