Heleta's hook & loop discs are designed to handle any sanding or finishing job performed with an random orbital sander. The disc's sandpaper face is constructed of industrial-grade backing paper for tear resistance, and premium aluminum oxide or silicon carbide grain for aggressive stock removal. We utilize a tough hook & loop system to insure a tight grip with the sander. Our disc's superior friability allows the wheel to breakdown and consistently expose new grain for a longer life. The sandpaper is specially coated to prevent clogging and increase removal rate.