ErgoTec safety scraper with rubber cover, accepts 1 1/2″ blade. Rubber grip prevents scraper from slipping in hand. Unique locking system prevent blade from sliding out. Push the nonslip trigger forward and blade is ready for use. Uses Unger® standard No. 9 (1-1/2″) Razor Blades (sold separately). Pushing the blade forward a second time makes blade easy to change.