REXBETI 36-Pack Utility Knives | Shrink Box Cutter For Cardboard Boxes | cCardboard And Boxes | 18mm Sharp Razor BladeREXBETI 36 Pack Utility Knives Shrink Box Cutter For Cardboard Boxes cCardboard And Boxes 18mm Sharp Razor Blade The sharp utility knife. A utility knife is an essential tool that everyone should have on hand at all times. and now you can get 12 pieces in 1 box! Each REXBETI razor is sharp and rust resistant. The safety lock design that will securely lock the blade in place. All of them are compact and pocket sized. You can easily cut packages, boxes,