20Pcs Diamond Mounted Point, 3mm Ball Head, 3mm Shank, Diamond Grinding Bit Rotary Burrs, for Jade Stone Jewelry Ceramic Carving Polishing Size:3mm The superior aluminum-oxide grain construction

The superior aluminum-oxide grain construction insures optimal sanding capacity

The sandpaper is excellent for hand sanding with blocks

The operator inserts the nozzle washer into a contractor-thread nozzle holder and screws in the nozzle

the fine grade for smoothing and finishing

3V Electric current: 50MA - 14 Digital I/O Pins (6 PWM outputs) - 8 Analog Inputs - 32k Flash Memory Package included: 1 x CNC Shield Board 1 x KeeYees Board 4 x A4988 Stepper Motor Driver with Heat Sink 1 x Female DC Power Cable 4 x Mechanical Switch Endstop 20 x 2

20Pcs Diamond Mounted Point, 3mm Ball Head, 3mm Shank, Diamond Grinding Bit Rotary Burrs, for Jade Stone Jewelry Ceramic Carving Polishing Size:3mm The superior aluminum-oxide grain construction20Pcs Diamond Mounted Point, 3mm Ball Head, 3mm Shank, Diamond Grinding Bit Rotary Burrs, for Jade Stone Jewelry Ceramic Carving Polishing Specification: Ball Head Diameter: 3mm 0. 11 Shank Diameter: 3mm 1 8 Total Length: 45mm 1. 77 Material: Diamond, Metal Features: Diamond particles applied on the head. Ideal for engraving, etching, grinding, sanding. Suitable for glass, wood, stone, ceramic tile, jade. Package Included: 20 x Diamond Mounted Point