Adjustable design The adjustable radius flex Longboard sander features an innovative adjustable design for a wide range of sanding tasks. By rotating the handle, you can set the radius to perfectly fit flat and curved surfaces for maximum versatility. Grip comfort Made from polyurethane foam, the sanding block offers a comfortable and efficient sanding experience. Its ergonomic shape is easy to grip, reduces effort, and provides a larger contact area for more efficient material removal. Hook and loop design The base uses a hook-and-loop system for quick installation and removal of sandpaper, enabling fast sheet changes and minimal downtime during work. Perfect size and sheet compatibility Measures approximately 70 x 400 mm. It can hold a 70 mm mesh sanding sheet or two pieces of sanding paper sized 70 x 198 mm, helping maintain a smooth and uninterrupted sanding process. Use scenarios - Auto body repair and finishing: shape body filler on curved panels, feather edges on flat panels, and smooth primer on fenders, doors, and hoods. - Surface preparation before painting: optimize contours on curved surfaces and around joints to create an even base for paint. - General sanding on larger flat areas or complex contours: the adjustable radius helps maintain consistent contact and finish across irregular shapes.