Silicone sleeve is a sleeve made of silicone material, which is usually used to protect, seal or insulate electronic components, wires, cables, etc. Silicone has excellent high temperature resistance

Bearing is a component used to support rotating mechanical parts, which is usually used to reduce friction and support the weight of the rotating shaft.

A diamond nut is a special-shaped nut. Its shape is diamond-shaped or hexagonal, has a larger contact area than ordinary nuts, and can provide better anti-sliding performance.

Grooved cylindrical head screw is a common type of screw, which is usually used to fix parts and provide mechanical connections. It is characterized by a cylindrical head and no slot,

The four-corner screw is a specially designed screw whose threaded head has four parallel corner structures, which has a unique appearance and function compared with traditional hexagon screws.

The inner hexagonal screw is a kind of screw whose threaded head is designed as a hexagonal groove, which is used to accept tools such as the inner hexagonal wrench or torque wrench for installation and removal.