Outside Diameter 74mm. Bore 20mm (16mm hole adapter is available, only for leave a message ask for adapter when you make payment）

46 grit diamond, best on marble and granite.

For routing stone with angle grinder or wood router.

Use wet or dry. Water or other cooling agent is recommended for longer life of the bit.

The picture may not be the correct size, for reference only. 

If you have any questions, please do not hesitate to contact us at anytime.