Features: Bevel Ease chamfers and stress relieves rough holes in glass, ceramic and porcelain tiles. Diamond bit for a smooth, high-end finish. Very useful to reduce the risk of cracking with standard and large format tiles subjected to tension. Very useful to improve the edge finishing of exposed holes. Specifications: Name: Conical diamond grinding wheel Material: Emery+Silicon Carbide Size:38mm/50mm Thread:M14 suitable for chamfering, grinding and finishing of various stones Quantity:1PC Package included: 1Pc* grinding wheel Note: Transition: 1cm=10mm=0.39inch. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.