Drywall Hand Sander performance for efficient sanding Large sanding surface about 7 cm x 40 cm. It fits 70 mm mesh sand or two 70 x 198 mm sanding paper pieces, allowing smooth, uninterrupted progress. Compatible with PSA sander paper and PSA roll sander paper. Adaptive design for flat and curved surfaces Rotating handle and rear groove adjust easily to flat and curved surfaces, providing precision and flexibility. Enables total control to achieve a consistent, quality finish. Effortless handling and comfort Adjustable Radius Flex Longboard Hand Sanding File Block is made with lightweight polyurethane foam. Ergonomic, easytohold grip with a design that covers larger contact areas for stable, efficient sanding results. Versatile utility for multiple tasks Ideal for a range of applications including woodworking, car waxing surface prep, wall grinding, and paint removal. Especially effective for rust and paint removal, making it a practical tool across varied tasks. Practical use scenarios Drywall and wall finishing: smooth joints and surfaces before painting. Woodworking: prep rough boards and edges prior to finishing for a clean surface. Metal and automotive prep: remove rust and paint from panels to prepare for refinishing, with compatibility for both PSA sandpaper and PSA roll papers.