Feature:
Brazing process sintering, high temperature resistance, high hardness, durable.
Dry diamond drill bits are sharp and durable, cutting perfect clean smooth holes.
Dry diamond drill bits compatible with most hand-held drill, drill press.
In order to improve the service life of the drill, it is recommended to open the small moon pressure groove on the item at a 45 degrees angle during the whole high-speed process, and then slowly erect the drill to 90 degrees.
Scope of use: glass, ceramic, marble, concrete, vitrified brick, granite, quartz stone, full ceramic tile.

Specification:
Product Name: Dry Diamond Drill Bits
Material: High Carbon Steel and Brazed Diamond
Diameter: 6mm / 0.24”
Hex Shank: 6.35mm/ 1/4”
Total Length: 67mm / 2.64”
Shank Type: Hex Shank

Package Included:
4 Pcs x Dry Diamond Drill Bits