[20mm]
Features
High purity
No impurities, good softness, moderate hardness.
Wide applications
Its a great set for grinding, polishing all sorts of things, such as polish ring or clean up silver dinnerware, stones, steel, wood and even plastic (3D prints), gem,pianos brass pins, etc.
Specifications
Material: high quality wool, metal
5 Pieces Cone Polishing grinding heads (diameter: 20mm)
Univeral shank diameter: 3mm (1/8inch)
Package include
5 x Cone Polishing grinding heads (20mm)