OLFA 18mm Heavy-Duty Silver Snap-Off Blades are tough snap blades that tradespeople rely on daily for consistency and performance. Crafted from high-quality Japanese tool steel and skillfully honed for maximum sharpness with superior edge retention. Choose these hard-wearing blades to work through demanding and coarse cutting materials. Created with a deep and smooth snap line, each razor-sharp section snaps cleanly but is durable enough for tough construction or industrial projects.