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 installing into thread hole. _x000D_ _x000D_Specification: _x000D_Material: Stainless Steel _x000D_Quantity: 50pcs _x000D_Color: Silver _x000D_Package Weight: Approx. 192g/6.8oz _x000D_ _x000D_Package list: _x000D_10 x M3*0.5-M5*0.5 L6 _x000D_10 x M4*0.7-M6.5*0.75 L8 _x000D_10 x M5*0.8-M8*1.0 L10 _x000D_5 x M6*1.0-M10*1.5 L14 _x000D_5 x M8*1.25-M12*1.5 L15 _x000D_5 x M10*1.5-M14*1.5 L18 _x000D_5 x M12*1.75-M16*1.5 L22 _x000D_1 x Storage Case _x000D_ _x000D_Note: _x000D_Due to the difference between monitors and light effect, the pictures may not reflect the actual color of the item. _x000D_Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1Made of high quality stainless steel, it is of high hardness and low abrasion. 2Greatly improve strength and stability of screws connection. 3With certain elasticity and even load, it is resistant to vibration to avoid loosening. 4Long service life it can be used repeatedly. 5Easy and quick to install with only one assembly tool.