Hand Sanding Block Set: This Sanding Block Set includes 16 sanding blocks in assorted shapes, each 3.8 inches long, made from a soft, durable foam PU material. The pad's hook & loop enable quick and secure sandpaper attachment and removal for optimal sanding disc life. Hook and Loop Interchangeable Assorted Shapes: Various shapes of chassis,chamfering, internal and external arcs, grooves and planes polishing.Polishing irregular planes such as concave and convex grooves, curved surfaces, flat surfaces, step surfaces, internal holes and other round-trip chamfering and polishing.You can quickly and easily change the shapes to suit your needs. Perfect Choice: The Hook and Loop Interchangeable Assorted Shapes ensure that you can easily switch between different shapes, making it perfect for sanding tight corners or hard-to-reach areas.It is an essential tool for woodworkers, carpenters, and DIY enthusiasts. Wide Range Of Uses: Manual sanding blocks are widely used and have strong grinding ability. They can be used to grind irregular planes such as uneven grooves, curved surfaces, planes, stepped surfaces, and inner holes. Easy to use: With its soft and durable foam material and hook and loop interchangeable shapes, this sanding set is incredibly easy to use. You won't need any special tools or equipment to get started, making it perfect for beginners and DIY enthusiasts alike. Meticulous Workmanship: The manual sanding block adopts self-adhesive-backed sandpaper roll, which is more exquisite in workmanship, and can better perform grinding and polishing work, saving time and effort. Colour:Red & Black Material:Foam Package Contents: 1 * Hand Sanding Blocks kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.