Diablo StickFast 5-In. 150-Grit Sanding Discs, 50-Pack are for sanding between paint and stain coats as well as removing minor imions. Crafted from a premium ceramic grain blend, these discs provide fast material removal and a long sanding life. They include Clog-SHIELD technology to minimize pitch build-up and clogging by using a unique blend of grinding agents. The StickFast backing features an industrial-grade Pressure Sensitive Adhesive (PSA) that ensures a strong and secure bond during use. Model Number: DCD050150P50G