RAZOR SHARP 9mm PRECISION BLADES - Double-honed for extreme sharpness, OLFA 9mm Ultra-Sharp Black Snap Blades are 25% sharper than standard silver blades. Made from Japanese tool steel for unmatched sharpness and edge retention to work longer. | CONTAINS 50 BLADES / 650 SEGMENTS - You'll receive 50 blades in this refill pack. Each blade contains 13 razor-sharp ABB Carbon Steel Snap-Off segments (650 segments total). Simply snap for a new sharp blade edge. | COMPATIBLE WITH 9mm KNIVES - OLFA's ABB Ultra-Sharp Black Snap Blades are compatible with most 9mm knives. For best performance, pair OLFA 9mm blades with OLFA 9mm handles. Replacement blades available in quantities of 10 (ABB-10B) and 50 (ABB-50B). | CUTS A VARIETY OF MATERIALS - These replacement blades provide accurate and reliable performance when cutting cardboard, wallpaper, vinyl, paper, foam board, caulking, molding, and more. Great for use at home or on the job. | THE OLFA STANDARD - As the original inventor of the Snap-Off Knife, OLFA has maintained a standard of cutting excellence for our quality and durability. Pairing your OLFA 9mm Utility Knife with OLFA 9mm Blades will provide optimal results.