Based on this product's specifications, here are some alternatives and similar models
Internal Drain Plug MAGNAPLAST HTM 50 mm (model 12510) for Sewer and Waste Pipes
Summary description:
MAGNAPLAST HTM internal drain plug, model 12510, designed for 50 mm sewer and waste pipes. This mechanical plug provides a removable seal for maintenance, testing, temporary blockage or repair of internal drainage lines. Suitable for use in residential and commercial plumbing systems where a 50 mm closure is required; compatible with standard pipe materials.