Based on this product's specifications, here are some alternatives and similar models
Shank connector Wolfcraft 2117000 for sanding and polishing discs, diameter 13 mm, shank Ø8 mm, 1 pc
Summary description:
Shank connector Wolfcraft 2117000 adapts sanding and polishing discs without a shank to rotary tools. It has a 13 mm diameter contact surface and an 8 mm shank for insertion into drills or drivers. Supplied as a single piece, this accessory enables use of disc-type abrasives and polishing pads with tools that require a fixed shank.