DescriptionThese 3pcs mushroom shape polishing heads are used for DIY engraving, grinding, polishing wood, metal, stone polishing purposes. These are scouring pad abrasive grinding head wheels for electric grinding rotary tool accessories. Can be used for metal grinding and polishing with good wear resistance, durable and practical.Features-Material: Scouring Pad. -Size: 10.00X10.00X9.00cm/ 3.93X3.93X3.54in. - High working efficiency, durable, wear-resistant, perfect grinding effect and long using life. -Fit for your polishing need, used for polishing all types of metal and jewelry and non-metallic materials in small area of rust deburring and surface polishing -As the material wears away, new abrasive material is exposed to maintain a uniform level of sanding action.-Useful for removing heavy surface deposits and oxidation from all kinds of surfaces. -Great for scrubbing and cleaning recessed and hard to reach areas.