16Pcs Grinding Polishing Block Set Special Shape Hand Grinding Sponge Sanding Block Polish Sandpaper Tool for Hook Loop Sanding. Features: - [Professional sanding blocks kit]: Adopts the design of diversified internal arc curves, which can meet the polishing requirements of objects with different curved shapes. - [Self-adhesive backing sandpaper roll design]: We adopt an advanced self-adhesive bottom design, with a polishing sponge, it is easier to use, the polishing effect is more refined, and it is convenient to switch the appropriate polishing block, which is more efficient and saves time. - [Multiple shape options]: The chassis has a variety of shapes, which are common chamfers, inner and outer arcs, grooves, and flat polished chassis. - [Washable and reusable]: The sanding sponges are washable and reusable, conveniently to use with wet and dry wipes. - [Widely application]: Grinding irregular surfaces such as concave-convex grooves, curved surfaces, planes, step surfaces, inner holes, etc., round-trip chamfering. It can be used for polishing and sanding of woodworking, automobile, metal, paint, etc. Specification: Type:Sanding block; Material:Fiber, Nylon, Glue; Color:Yellow + Black; Package:Carton; Package size:21x16x11cm; Weight:425g; Quantity:16pcs; Produce Included: 16 Pcs x Sanding block.