Based on this product's specifications, here are some alternatives and similar models
Scraper Blade 140 mm for NEO tools scraper model 50-257, spare blade 50-267
Summary description:
Replacement 140 mm scraper blade compatible with the NEO tools scraper model 50-257. Durable metal blade designed for paint, adhesive and gasket removal, and general surface stripping. Fits the specified scraper handle and provides a straight cutting edge for efficient scraping on wood, metal, glass and masonry. Sold as a single spare blade with manufacturer part number 50-267.