Description Scope of delivery: 144 sanding belts and 6 battery mounts. A total of 150 drum sanders with a free plastic box, convenient to store and grab. Perfect combination. The rotary sanding belts include 2 grits (80 grit, 120 grit) and 3 diameters (1/2, 3/8 and 1/4), each grit and size has 24 sanding belts. Universal mandrel: 6 reusable drum chucks divided into 3 diameters (1/2, 3/8 and 1/4), 2 pieces of each size. Common and standard size compatible with all rotary tools such as Dremel. Easy installation. Rubber sanding drums in different sizes serve different diameter sanding sleeves, which is convenient for installation and use. Note: Use professional safety glasses to protect your eyes, as there may be flying grit when the sanding drum rotates at high speed. Excellent compatibility. 12 inch drum sander kit standard size, widely used for smoothing curved surfaces and edges, both for soft and hard materials such as DIY, woodworking, crafts and other DIY finishes. Contents: 24 1/2 sanding belts (80 grit). 24 1/2 sanding belts (120 grit). 24 3/8 sanding belts (80 grit). 24 3/8 sanding belts (120 grit). 24 1/4 sanding belts (80 grit). 24 1/4 sanding belts (120 grit). 2 1/2 drum mandrels. 2 3/8 drum mandrels. p 2 x 1/4 drum mandrels. Use professional safety glasses to protect your eyes, as there may be flying grit when the sanding disc rotates at high speed. The sanding disc sticks faster to the metal surface, replace the sleeves in time to achieve a better sanding effect. This product is not edible, keep it away from infants under 3 years old. Welcometomeet