Overview Reviews Product Description Cut sharper, faster, and more efficient with OLFA 18mm ultra-sharp black speed blades. Manufactured from quality high carbon tool steel from Japan. Each blade is then honed twice to produce a blade that is up to 25% sharper than standard silver blades. A non-stick coating minimizes cut resistance to create a blade that cuts up to two times faster. Choose speed blades for dense materials such as foam insulation board, ceiling tile, cardboard, and more. Eight (8) snap sections per blade provide plenty of cutting before needing to change a blade. A deep score in each section allows for a quick snap for access to a fresh edge. OLFA black speed blades deliver unmatched sharpness, speed, and efficiency. Compatible with most 18mm snap knives. Cuts carpet, corrugate/cardboard, foam board, house wrap, insulation, laminates, linoleum, plastic sheeting, plastic straps, shrink wrap, tape, turf, twine/rope, and more. Olfa Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × Olfa 10 Pc. LFB-10B 18mm Ultra Sharp Black Heavy Duty Snap Blade w/ Enhanced Non Stick Coating 1120896 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *