Best on marble , granite and glass. For router stone with wood router. Use wet or dry. Water or other cooling agent is recommendedfor long life of the bit. Model # TRTASJNIEJ2434 Features: Product Name : Diamond ProfileRouter Bit;Material : Diamond Coated, Metal Grit : 46;Shank Diameter : 12. 7mm / 1/2" Cutting Diameter : 13mm / 1/2";Cutting Length : 40mm / 1. 6" Overall Length : 75mm/ 3";Color : Silver Tone Weight : 77g;Package Content : 1 x Diamond ProfileRouter Bit.
