A grinder is a general term for a small handled abrasive tool, used in electric grinders, hanging grinders, and electric drills. There are many types, mainly including ceramic grinders, rubber grinders, diamond grinders, sandpaper grinders, etc.

Ceramic Grinding Heads: Made of particle abrasive (usually corundum, white aluminum oxide, chrome alumina, silicon carbide) bonded with ceramic binder and equipped with a metal handle at the center. Primarily used for grinding various metals, suitable for finishing the inner walls of holes and for correcting molds.

Rubber Grinding Head: Finer grit sand bonded with rubber binder, used for mold polishing.

Sandpaper Grinding Head: Multiple rectangular sandpaper sheets bonded around a metal handle. Grain size typically ranges from 60# to 320#, used for polishing the inner wall of holes.

Diamond grinding wheel: A tool for grinding non-metallic materials such as stone and ceramic, particularly a grinding tool with a diamond alloy abrasive body, including a matrix and several abrasive bodies. The abrasive bodies are loosely mounted in the matrix, and they also have an intermittent arrangement on the grinding surface of the grinding head. The matrix is made of an adhesive material with certain toughness, while the abrasive bodies are made of diamond alloy material. This utility model features high grinding performance, simple manufacturing, low cost, high quality of grinding processing, and is suitable for large-scale grinding processing.