Olfa "CTB-5" 18 mm Repl. Blades - 5 Pack

These Olfa 18 mm (3/4") Replacement Blades are crafted from Premium Japanese carbon tool steel & honed to perfection for a sharp edge. Designed for use with the Olfa CTN-1 Carton Cutter  See here. Each blade offers six (6) segments for fewer blade changes & more productivity. When the blade edge is dull, a simple snap delivers a fresh edge & allows you to continue working. Perfect for many applications, including acetate, cardboard, & paper. Sold as 5 PK of blades.    Made in Japan.

From the Manufacturer - About OLFA:

    OLFA brand blades are made with top quality materials, forged with technologies that stem from traditional sword-making, sharpened with technologies that give a blade life, and ultimately finished with the craftsmanship that brings all of this together. The holders and handles that allow users to gain the full cutting performance of these high quality blades are designed, developed and manufactured in Japan and subjected to stringent quality checks throughout the process.