DOWELL Utility Knife Box Cutter Retractable Self Loading Heavy Duty Snap Off Quick Change Extra Blades(3PCS) TPR+PP Handle Cutting Cardboard Boxes or DIY - - Amazon.com
Amazon.com : Pacific Handy Cutter Inc. HC100 Handy Box Cutter, Tap Open/Tap Close, 12 per Box, Assorted(Packaging may vary) : Paper Roll Cutters : Office Products