The set includes: - 240 pieces of sanding bands in 3 diameters: 1/2", 3/8" and 1/4", 80 pieces per size and 12 pieces of sanding drum in 3 diameters: 1/2", 3/8" and 1/4", 4 pieces per size; 252 pieces in totalPractical - Sanding bands in standard size and standard 120 grit, used for smoothing the surface and curved edges, polishing soft and hard materials, such as DIY, artwork and woodworkEasy installation - Drum mandrels with self-expanding rubber cushion, making the sanding bands close to the mandrel firmly and achieving a better finish; In case the sanding belt comes loose from the mandrel during use, please make sure the drum has been screwed tightly and is very close to the sleeve.Note: Please wear professional safety glasses 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 metal surface faster, please replace the sleeves timely to achieve the best sanding effectBonus - Comes with a free plastic box, convenient to store and fetchDelivery Quantity: 252 pieces,"