4" x 36" Sanding Belts are manufactured with premium grains adhered to the cloth that meets strict European standards. The 4" x 36" sanding belts are made of high-quality open-coated alumina particles, which have good wear resistance, antistatic properties, and flexibility, providing fast and long-lasting sanding. This sanding belt is the perfect option for daily deburring, polishing, grinding, and sanding. Each belt is made with a durable polycotton blend backing which has good wear resistance and provides fast and long-lasting sanding.