In plastic medias, abrasive particles are held in polyester resin. Compared to ceramic medias, they are of lower density and are softer. Plastic grinding medias are mostly used for deburring, rust removal, degreasing, descaling, cut-off corner, oxide opening of soft metals (aluminum, zinc brass, zamak, gold, copper, silver, etc.) and plastic-based materials. The high quality plastic grinding medias offered by Kromaş allow you to achieve low surface roughness (Ra, Rz) values without damaging the surface of the workpieces by means of the soft binder resin. There are plastic grinding medias available in many different dimensions, geometries and abrasion levels.