The Olfa AB-50S 9mm Stainless Steel Blades are an industry-standard in the world of window tinting. These blades are made of stainless steel, which are considered softer blades and tend to be safer for cutting on glass. They can be used in most industry-standard knives, making them a versatile choice for any job. The blades come in a plastic container that holds all 50 blades, making it easy to keep them organized and accessible. Each individual blade has 13 snap segments, which means you can get more use out of each blade before needing to replace it. Trust the Olfa AB-50S blades for precise and consistent cuts every time.