Welcome to our shop! Package includes - 120 pieces of sanders in 3 diameters: 1/2", 3/8" and 1/4", 40 pieces per size, and 12 pieces sanding drum in 3 diameters: 1/2", 3/8" and 1/4", 4 pieces per size; total 132 pieces Must-have accessory - 120 grit standard and standard size sanding bands used to smooth the surface and curved edges, polishing both soft and hard materials, such as DIY, artwork and woodwork Easy installation - drum chucks with self-expanding rubber cushion, making sanding bands close to the mandrel firmly and getting a better finish; In case the sanding belt becomes loose from the mandrel during use, please make sure the drum has been screwed in tightly and is very close to the sleeve Note: Please wear professional safety goggles to protect your eyes, because there may be lump particles when the sanding drum rotates at high speed; the sanding drum will be attracted to the sanding drum faster. metal surface, please replace the sleeves timely in order to get the best sanding effect Bonus - come with a free plastic box, convenient for store and recovery Shipping quantity: 132 PCS/box Product color: Red, Black Product size: diameter 3.17mm Note: Manual measurement, please allow 1 - 3cm error!!! 100% satisfaction - Our customers are our priority. If you find any problems with the products after receiving the goods, such as damage and incorrect quantity, please contact us immediately. We do our best to provide you with satisfactory after-sales service.