This Draper Rotary Multi-Tool Accessory Set includes 40 pieces for use with rotary tools. The set features a 2.3mm collet, grinding stones with shanks, a sanding shank, mandrels for felt and cut-off wheels, stainless steel brushes, diamond cutters, HSS drill bits, sanding discs, sanding bands, felt wheels, cut-off wheels, a whetstone, and a wrench. It is ideal for various grinding, cutting, and polishing tasks. The set dimensions are 9.50cm x 6.50cm x 3.00cm and it weighs 0.07kg.