ProTrim10 Scraper, Replacement Blades. Lightweight glass scraper removes heavy dirt, mortar, glue, stickers, etc. Innovative design perfectly fits in your hand and pocket. Nonslip material is ideal for use in cold, wet conditions. Integrated blade guard locks open or closed for safe storage—no need for a separate blade cover. Quickly open scraper with unlock button for safe, easy blade change. Includes double-edged 4" wide carbon steel blade. Replacement blades are also double-edged carbon steel. 10 Scrapers per Case.