General description The 132-piece drum sanding kit is designed for use with YMYNY rotary tools, featuring 120 sanding belts and 12 drum mandrels. This comprehensive set includes a variety of sizes to accommodate different sanding needs, making it ideal for DIY, art, and woodworking projects. Technical specifications Set includes: 120 sanding belts and 12 drum mandrels Sanding belts diameters: 1/2", 3/8", and 1/4" (40 belts for each size) Drum mandrels diameters: 1/2", 3/8", and 1/4" (4 mandrels for each size) Total pieces: 132 Installation The roller mandrel features self-expanding rubber pads for a snug fit of the sanding belt. If the sanding belt comes off during use, ensure the roller is tightened and firmly inserted into the sleeve. Usage Designed for sanding curved surfaces and edges. Suitable for polishing hard and soft materials. Replace the sleeve in a timely manner for optimal polishing results. Other information Includes a plastic carrying case for easy storage and access.