Ceramic 9mm (3/8") Replacement Blade for use with retractable cutter / box cutters - lasts 20 to 30x longer than regular blades
4.5" Tile Cutter Blade
OMS Ceramic Blade for Line Cutter White | Diveinn
Amazon.com: Cool Hand Zirconia Ceramic Utility Blade, Replacement Blades, Box Cutter, 6 Pcs per Pack, Stanley Knife Good Choice for Unwrapping Parcel Cutting Paper : Tools & Home Improvement