OLFA DKB-5 30-degree sharp angle art blade wallpaper/car film blade 50 pieces, Made in Japan. RAZOR SHARP 30 DEGREES PRECISION BLADES - These blades are made from Japanese tool grade steel for unparalleled sharpness and superior edge retention. The long lasting precision of these blades allows you to work longer uninterrupted. CONTAINS 10 PACKAGE WITH 5 BLADES EACH / 50 KNIVES - You'll receive 50 blades in this refill box. Each blade contains 9 razor-sharp DKB-5 Precision Silver Snap-Off segments (450 segments total). Simply snap for a new sharp blade edge. COMPATIBLE WITH 9mm KNIVES - OLFA's DKB-5 snap off blades are compatible with most 9mm precision/utility knives. For best performance, pair OLFA 9mm blades with OLFA 9mm handles.