Description: HARD: Emery grains are firm and hard, brazing process, not easy to drop sand, sharp and wear resistant, durable. EASY TO USE: The tapered structure can be drilled/sanded, which is convenient and practical. APPLICATION: The diamond bevel chamfering bit can be used for edging processing of hard and brittle materials such as stone, glass, metal, etc. When using it, make sure that the threaded interface is securely installed with a wrench, and wear a protective mask, etc. CHAMFER BITS: Can enlarge/trim/shape round holes and improve the edge finish of exposed holes. USAGE: Diamond Chamfer Bits can be used dry or wet. Specification: Material: Emery Grit: #80/100 Thread: M14 Size Chart: 35mm: Cone Height: 37mm/1.46inch Overall Length: 45mm/1.77inch Maximum Diameter: 35mm/1.38inch 38mm: Cone Height: 33mm/1.30inch Overall Length: 45mm/1.77inch Maximum Diameter: 38mm/1.50inch 48mm: Cone Height: 43mm/1.69inch Overall Length: 53mm/2.09inch Maximum Diameter: 48mm/1.89inch 50mm: Cone Height: 47mm/1.85inch Overall Length: 54mm/2.13inch Maximum Diameter: 50mm/1.97inch Package Includes: 1x Chamfer Bit Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!