Slice 10400-CS 10400 Box Cutter, Ceramic Safety Blade, 3 Position Manual Button, Stays Sharp up to 10x Longer than Steel Blades, 6 Pack 3-Position Manual Slider Button allows blade to stay locked in 3 positions (Fully extended blade, semi-protruding blade, Fully hidden blade) Zirconium Oxide Ceramic Blade with Rounded Tip for Safety = Non-Conductive, Anti-Magnetic, Never Rusts, Chemically Inert (No Oil Coatings) + Stays Sharp Up To 10X Longer Than Steel Blades 1 Slice Ceramic Blade = Up to 20 Metal Blades = Less Blade Changes = Less $$$ = Less Downtime = Less injuries + Simple No Tool Blade Change (Replacement SKU# 10404 or 10408) Ceramic Blade only protrudes 1/2" - designed primarily for cutting corrugated packaging, foam, vinyl, boxes, cardboard, etc To cut paper and thinner items please try the Slice 00116 Precision Cutter or 00100 Safety Cutter or use the Pointed Blades 10408