Based on this product's specifications, here are some alternatives and similar models
Wheel Housing with Magnetic Wheel for AWTools CZ.AW KOSA — compatible with BC520 and BC415
Summary description:
Spare wheel housing assembly with an integrated magnetic wheel designed for AWTools CZ.AW KOSA series. Intended as a replacement part compatible with models BC520 and BC415. Provides mounting support for the magnetic wheel, ensuring correct positioning and function within the cutting/edging tool. Suitable for repair, maintenance, and parts replacement to restore machine operation.