☛This burr is made of high quality diamond and alloy,for long life service, recommend to use coolant(such as water) on the obj surface when you using.
☛Cylinder shape design, grinding diameter is 8mm. 3mm mandrel diameter fits most rotary tool or bench grinder.
☛60 grit great for rough grinding surface of materials.such as ceramic, glass, precious stone, alloy and many other abrasive materials.
☛Suitable for cleaning, sharpening, deburring, grinding, rust protection, etc.diamond grinding bits is Ideal tools for processing various molds, stone, glass, jade carving and others.
☛Package included: 12 Pcs diamond mounted grinding burr.(Somebody also use this burr for dog nail remove)