Based on this product's specifications, here are some alternatives and similar models
Angle grinder accessory Dedra HP2105E — 21 cm diameter, pack 1
Summary description:
Accessory for angle grinder Dedra HP2105E with a 21 cm diameter, supplied as a single unit per pack. Designed to fit compatible Dedra angle grinder models and provide a replacement or spare part for cutting, grinding or surface work. Suitable for workshop use and DIY projects where a 21 cm accessory is required.