CELCO Heavy Duty Manual Lock Knife 18mm – Snap-Off Blades for Cardboard & Foam Board

You've been fighting a flimsy utility knife that goes blunt halfway through a score line. This one locks the blade in place so your hand stays put while you cut. The grooved plastic body sits flat in your palm — no slippage on long cuts through cardboard or foam board. When the edge dulls, you snap off a fresh tip and keep going. No hunting for a new knife mid-project. 18mm snap-off blades give you a clean, renewable cutting edge every time. Built for the classroom, the craft room, or the workshop bench where a cheap blade just won't hold

• Manual locking mechanism secures the blade so it stays put while you cut
• Grooved plastic body gives a flat, slip-free grip on long scores
• 18mm snap-off blades — snap off the dull tip, keep the same knife
• Cuts through cardboard, foam board, and stiff craft stock without tearing
• Built for classroom, craft, and workshop use where a flimsy blade won't hold