OLFA AB-50B snap blades are made from the finest tool steel. Blade in dispenser for OLFA knives #OL-180, OL-SVR1, OL-300, OL-A, OL-NA1. 12 snap-offs per blade. Double-honed to 11 degrees for extra sharpness. Designed to cut through packaging, shrink wrap, vinyl, window film, wallpaper, caulking, foam board and other materials. Fits 9mm OLFA utility knives. PACK OF 50.