The double-edged 6-inch blade gives you eight times the scraping width as compared to most ordinary scrapers. The MK3 Straight model comes with the original and popular Triumph carbon steel blade, but can also easily be used with stainless steel blades. All blades are easy to change or rotate without use of a screwdriver or other tool. The sharp double-edge blade is securely held in the handles reinforced channel. Snap on the protective cover when the scraper is not in use. The cover is available with or without the rubber squeegee. The red color signals. "Attention! Sharp Blade." All Triumph replacement blades are supplied in a safe dispenser with room for used blade disposal. The anti-slip ribs provide a secure hold.