Diablo's premium triangle detail sanding sheets with Hook and Lock™ backing include break-through innovations that improve performance, extend sanding life and increase productivity. Featuring a premium ceramic blend, these discs remove material faster and offer extra long sanding life than other sanding discs. Clog-Shield™, Diablo's own blend of grinding agents, reduces loading thus maximizing productivity. The great grain bonding system, Endura-Bond™, provides Diablo's sanding discs with longer life and extreme durability.