Package includes - comes with 360 pieces sanding belts and 24 pieces sanding drum mandrel, totally 384 pieces drum sander set Essential 6 grits accessory - These rotary sanding brands contain 6 sanding grits (80 grit, 120 grit, 240 grit, 320 grit, 400 grit, 600 grit) and 3 diameters (1/2, 3/8 and 1/4) Each grit and size has 20 sanding bands for your use Universal Drum Mandrels - Reusable 24 pcs shank sanding drums are divided into 3 diameters (1/2 , 3/8 and 1/4 ), each 8 pcs Easy installation - make sure the drum was screwed tightly, the drum chucks with self-expanding rubber cushion, making the sanding bands close to the chuck firmly and getting a better finish; Note: Please wear professional goggles to protect your eyes, because there may be some grit flying when the sanding drum rotates at high speed Wide compatibility - set of drum sanders from most popular standard and common size for smoothing surfaces and curved edges, polishing soft and hard materials, such as home improvement, artwork, woodwork and other finishing work Specifications Sanding belt size: 1/2 inch, 3/8 inch and 1/4 inch Drum chuck size: 1/2 inch, 3 /8 inch and 1/4 inch Sanding belt material: aluminum oxide Package includes 20 * 1/2 inch sanding belts (80 grit) 20 * 3/8 inch sanding strips (80 grit) 20 * 1/4 inch sanding strips (80 grit) 20*1/2 inch sanding strips(120 grit) 20*3/8 inch sanding strips(120 grit) b 20*1/4 inch sanding strips(120 grit) 20*1/2 inch sanding strips(240 grit) 20*3/8 inch sanding strips( 240 grit) 20 * 1/4 inch sanding strips (240 grit) 20 * 1/2 inch sanding strips (320 grit) 20*3/8 inch sanding strips(320 grit) 20*1/4 inch sanding strips(320 grit) 20*1/2 inch sanding strips( 400 grit) 20 * 3/8 inch sanding strips (400 grit) 20 * 1/4 inch sanding strips (400 grit) 20*1/2 inch sanding strips(600 grit) 20*3/8 inch sanding strips(600 grit) 20*1/4 inch sanding strips( 600 grit) 8 * 1/2 inch Drum Chucks 8 * 3/8 inch Drum Chucks 8 * Drum Chucks 1/4 inch Note Please wear professional goggles to protect your eyes, because there may be oil grains when the drum is sanding turns large speed. The sanding drum will be worn out faster on the metal surface, please replace the sleeves soon in order to achieve the best sanding effect. These products are inedible and please keep them away from babies under 3 years old. Welcome to meet