Features: Hand Sanding Block Set is a good choice for beginners and DIY lovers, and is a must have tool for your studio. Sanding Block Kits is used to reach every corner and grooves, ensuring a smooth surfaces every time. Contoured Profile Sanding Pad Tool Set includes a variety of shapes to meet the different curves of the grooves, providing solution for all your sanding need. Hand Sand Chassis makes polishing inner curves, curved edges, single curves, chair back inner holes, angles, and step planes easier, more efficient, and more consistent. Sanding Chassis is made of PU, flannel cloth, and short hook cloth, ensuring performances and quality surfaces treatments, making projects more outstanding. Specifications: Component:PU Size:Approx.100mm/3.94inch Package Includes: 1 Set Hand Sanding Block note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.