Features [Premium Material] This self-tapping is made of high-quality stainless steel with high hardness and low wear. [Improve stability] This thread insert greatly improves the strength and stability of the screw connection. [High Efficiency] It has a certain degree of elasticity and uniform load, and has anti-vibration properties to prevent slacking. [Durable] This stainless steel thread insert has a long service life and can be reused. [Easy Installation] This installation is simple, only an assembly tool can be installed easily and quickly. Self-tapping thread insert is a kind of thread reinforcing closure, 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 damage inside thread. Specification: Material: Stainless steel. Quantity: 58 pieces Colour: silver. Package weight: approx. 207g/7.3oz Package List: 10 x M3 x 0.5-M5 x 0.6 L6. 10 x M 4 x 0.7-M6.5 x 0.8 L8 10 x M5 x 0.8-M8 x 1.0 L10 10 x M6 x 1.0-M10 x 1.25 L12. 10 x M8 x 1.25-M12 x 1.5 L14 4 x M10 x 1.5-M 14 x 1.5 L18 4 x M12 x 1.75-M 16 x 1.75 L22 1 x storage case. Note: Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. Package List