DT-DIATOOL Diamond Beveling Chamfer Bits - Diamond Countersink Drill Bit 4/5 Inch 2pcs with Hex Shank for Enlarging Trimming Shaping Existing Holes of Granite Marble Porcelain Tiles,Size of 0 to 20mm

DT-DIATOOL Diamond Beveling Chamfer Bits 4/5 Inch with Hex Shank Application: For enlarging, polishing and beveling the exist holes. Features: 1. Vacuum brazed processing, high diamond concentration provides for a faster cut rate while the high quality of the diamonds provides longer working life. 2. Strict production process, to ensure the perfect combination of the cutter head and the base. 3.Bevel ease chamfers and stress relieves rough holes in ceramic and porcelain tiles. 4.Very useful to reduce the risk of cracking with standard and large format tiles subjected to tension (ex tightened plumbing, led lights etc). 5.Very useful to improve the edge finishing of exposed holes. 6.M14、M10 or 5/8"-11 thread. Dry or wet use. [Please Attention] : When using, tilt and reduce the contact surface. Do not press with force (direct pressure). Shake slowly and slightly along the force, and the range should not be too large.v This is not a core bit for drilling. It doesn’t make holes but it bevels the hole cleaning and reinforcing the borders when the borders are chipped or need to be clean.

• Diameter 4/5 Inch(20mm): workable length 46mm; Chamfer angle: top angle 56 degree; Grit:#80. With the Hex shank, used on hand drill. General hand drill RPM is from 2000-5000RPM. The higher speed you use, the longer life of the product.
• Not for directly drilling holes,but designed to enlarge, shape, polish, clean, trim, finish, round or bevel existing rough holes of marble ceramic porcelain tiles granite, etc.
• Diamond grit #80, helps to reduce the risk of tile cracking when under tension; Wet or dry use.
• Vacuum brazing technology keeps premium diamonds more firmly and durable. Better work effect and longer life.
• As a small and delicate tool,just one this versatile milling bit/diamond cones beveling bit,many holes of can be created from 0-4/5 Inch. Or make round chamfer on the edge.