Olfa LWB-3B 18mm Heavy Duty Spare BladeSerrated edge for porous materials Extend for deeper cuts Premium Japanese tool steel Fits most 18mm snap knives The LWB 3B Insulation Blade by OLFA is precision honed for professional grade sharpness and durability. The serrated edge glides through thick or porous materials with ease. Extend the long, solid design blade for a clean and accurate cut every time. Crafted from the highest quality Japanese steel, each blade provides lasting sharpness. The
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