Self-locking grinding wheels on Velcro are intended for fastening to a platform with an installation on polishing machines, grinding machines, electric drill. The circles differ in the size of the grain fraction, have different outer diameters, and have a type of manufacture: with perforation (with holes), for professional use on power tools with an exhaust system (vacuum cleaner), and without holes (which has a wide range of use in domestic conditions). Purpose: for processing putty, paint, varnish, wood, plywood, metal, plastic