Specification :

Rex-Lee small engraving burrs are ideal for power engraving intricate details in glass, metal, wood, stone, ceramic, leather, fiber, plastic and soft material. Smooth cutting surface, high drilling speed.
Specifically for the mold & die maker, jewelry industries, and by home hobbyists.
Used for precision grinding of small holes in carbide, ceramics, sapphires, glass and extra hard alloys.
All Ø 2.34mm shanks can be used on a wide range of pneumatic, electric and flexible drive tools.