Designed for Professionals The OLFA 18mm Heavy-Duty Silver Snap-Off Blade is manufactured from high-quality Japanese tool steel. These professional blades deliver durable, lasting performance. Each blade is precision honed for unparalleled sharpness and edge retention. With eight segments per blade, a fresh sharp edge is always available quick and easy. Use OLFA 18mm Heavy-Duty Silver Snap-off Blades to deliver accuracy and reliability for cutting drywall, roofing, flooring, rubber, and more.