WORKPRO Folding Utility Knife, Quick-Change Box Cutter, Blade Storage in Handle with 5 Extra Blades Included - - Amazon.com
Utility Knife, DAT Series-X Portable Box Cutter, Fine Point Arts and Crafts Blade for Precision Cutting, with 10 Blade Pieces (White, 1 Cutter 10 Blades) - - Amazon.com
CRAFTSMAN 3/4-in 4-Blade Retractable Utility Knife in the Utility Knives department at Lowes.com
Kaizen Knife Thin Blade (10 Pack) - FastCap
Folding Lock-Back Utility Knife
Stanley 6 in. Classic Retractable Utility Knife 10-099 - The Home Depot
ROBERTS Professional Carpet Knife with Push Button for Quick Blade Change 10-252 - The Home Depot