Based on this product's specifications, here are some alternatives and similar models
Replacement blades for scraper Tetra SB 45, pack for SB45 scraper
Summary description:
Replacement blades designed for the Tetra SB 45 scraper. These blades fit the SB45 model and are intended to restore cutting or scraping performance of the original scraper. Suitable for routine maintenance and replacement when the original blades become dull, they allow continued use of the SB 45 scraper for cleaning and scraping tasks.