Inflatable annular mandrelIt is a precision tool designed for securely clamping rings during the polishing and grinding process. Its working principle is to tighten the nut, causing the inner wall of the mandrel to expand outward, thereby tightly fitting the inside of the ring. This not only provides a secure clamping but also avoids damaging the surface of the ring.

After the mandrel is installed on a power drill or rotary tool, the ring can be polished and finished at high speed. Compared with traditional manual operation, it not only greatly improves efficiency, but also ensures a more uniform and consistent processing effect.

This tool is particularly suitable for jewelers and makers, providing them with an efficient, repeatable, and accurate ring polishing solution, combining a simple mechanical design with professional-grade processing quality.