Features:

Can grind marble， jade and other non-metallic materials
Petiolate can basically replace the small wheel， there is no dust pollution
Grinding efficiency is increased to 10 times better than manual files and petiolate wheels
Processing is smoothness and can be all sorts of precision shape
Safe， reliable and convenient to use
Long life: over 200 times than the wheel
HRA processing hardness: 80
Shank Diameter: about 3mm/ 0.12"
Total Length: about 50mm/ 1.97"
10 pcs Tungsten Carbide Burrs in a case

Package Included: