Serious Grit 3" x 5" P150-180 foam sanding pads are designed for ultra-flexible sanding with Festool RTS 400, Mirka DEOS 353, and other 80x133mm sanders with 14-hole hook & loop interfaces. These pads use a 1/2" low-density open-cell foam that conforms easily to curves, profiles, and moldings without cutting through edges or high spots. Ideal for refining primer or smoothing wood grain around moldings, curved surfaces, or edges, the premium silicon carbide abrasive cuts cleanly and evenly across a variety of surfaces. Hook & loop backing allows quick pad changes, and the foam construction supports both wet and dry use for versatile performance.