Gator Blade I features arched blades on opposite ends. This blade design allows more scraping pressure for around rear defrosters and for adhesive removal on surfaces where metallic razor blades would scratch surfaces, such as stainless steel and painted surfaces. The ProToolsNow Gator Blade I contours to the shape of auto glass so that it efficiently removes debris & old adhesive. It also aides in pushing down fingers and removing creases. Because Gator Blades are much less likely to cut expensive upholstery or scratch the soft surface of auto glass, they are a fantastic replacement for the hazardous metallic razor blades used by Tinters and Detailers.