Metal bond is made of copper alloy-based, cobalt-based, iron alloy-based, etc. bonding agents and has high abrasive grain retention and excellent cutting and wear resistance.

Resin bond is an organic bond consisting mainly of phenol resin, polyimide resin, etc., which has high processing efficiency and produces a good surface finish.

It is widely used not only for optical lenses but also for crystals, ceramics, and semiconductor materials.