Based on this product's specifications, here are some alternatives and similar models
Rear Disc Grinder Flex BP-M D115 M14 — Flex 240311, 115 mm disc, M14 spindle
Summary description:
Flex Rear Disc BP-M D115 M14 (MPN 240311) is a rear-mounted disc grinder designed for 115 mm abrasive discs with an M14 threaded spindle. Intended for surface grinding, rust and paint removal, weld seam finishing and edge preparation on metal and other materials. Compact design suits workshop and on-site use where a rear disc configuration is required.