Use ProSand A259PS fine grit paper cut sheets with your sanding board or block or hand sand to remove stock faster and last longer than 3X technology. Engineered using a premium heat-treated abrasive, these sheets are a great choice for finishing and surface prep and work great on fiberglass and composites, metals, super alloys, 300 series stainless steels and hard and soft woods. Latex-saturated and featuring a fiber-reinforced heavy backing, these flexible, tear-resistant sheets are easy to fold and provide excellent grain retention. The non-pigmented, water-based stearate open coat resists clogging, loading and color transfers.