1st multifunctional felt Mandrel mounted grinding wheel polishing accessories. 2 smooth and refined surfaces with these felt ironers for polishing metal, ceramics and glass 3. Grinding wheel head diameter: 10mm / 8mm / 6mm / 5mm / 4mm Shank size: 3mm. 4.with 50 cylindrical grinding heads, 50 ball grinding heads, 5different sizes of all shapes. 5. make they have been polished clean and bright, best used for different shapes, glass, equipment and metal. Product Description This high quality wool felt mounted sanding heads are soft with a smooth and refined surface. Work great for polishing metal to metal parts, cleaning and polishing jewelry, gemstones, glass, watches, crystal, trigger, lining Ramps, car, motorcycle parts, various shapes, etc. Features: Material: high-end cotton, metal 50 cylindrical grinding wheel heads (Diameter: 10mm / 8mm / 6mm / 5mm / 4mm) 50 ball (Diameter: 10 mm / 8 mm / 6 mm / 5 mm / 4 mm) Color: White + silver Shank size: 1/8 (3 mm) Package include: 100 x Wool