The self-tapping thread insert is a kind of fastener that strengthens the thread, which can form a high-strength inner thread hole when embedded in a soft material such as plastic, copper. It can also be used to repair the damaged inner thread. _x000D_ _x000D_Features: _x000D_1. Made of high quality stainless steel, it is of high hardness and low abrasion. _x000D_2. Greatly improve strength and stability of screws connection. _x000D_3. With certain elasticity and even load, it is resistant to vibration to avoid loosening. _x000D_4. Long service life - it can be used repeatedly. _x000D_5. Easy and quick to install with only one assembly tool. _x000D_6. It can also repair the damaged thread by install it into thread hole. _x000D_ _x000D_Specification: _x000D_Material: Stainless Steel _x000D_Quantity: 58pcs _x000D_Color: Silver _x000D_Package Weight: Approx. 207g/7.3oz _x000D_ _x000D_Package list: _x000D_10 x M3*0.5-M5*0.6 L6 _x000D_10 x M4*0.7-M6.5*0.8 L8 _x000D_10 x M5*0.8-M8*1.0 L10 _x000D_10 x M6*1.0-M10*1.25 L12 _x000D_10 x M8*1.25-M12*1.5 L14 _x000D_4 x M10*1.5-M14*1.5 L18 _x000D_4 x M12*1.75-M16*1.75 L22 _x000D_1 x Storage Case _x000D_ _x000D_Note: Due to the difference between monitors and light effect, the pictures may not reflect the actual color of the item.