Brush for the surface treatment of materials

摘要

Brush for the surface treatment of materials comprising at least one bundle of abrasive bristles (2) fixed to a support (1) connected to the upper base of an insert (3) which has substantially the shape of a prismoid having the bases and two opposite side surfaces of trapezoidal shape, wherein the upper base of said insert (3) has a smaller extension than the lower base thereof. <IMAGE>