The UBK is a set of 5 double pointed replacement blades for the utility knives.
Terry Guinn Knives Friction Folder Drop Point Blade Satin Finish w
Malco UBS5 Straight Double Point Blades, 5-Pack
Lenox Tools 20351GOLD50D Titanium Coated High Speed Steel Double
Bostitch 4-Blade Utility Knife at
Replaceable blades: includes 3 carbon-steel blades (1 loaded and 2 spare that store inside the body) Universal blade system: accommodates any
Basics Soft Grip Retractable Utility Knife with 3 Blades, Black/Silver
Lenox Tools 20351GOLD50D Titanium Coated High Speed Steel Double
Silver Legacy Edge OTF Knife Spear Point, Double Edged Blade
Husky 2-in-1 Folding Utility Knife and Sporting Knife 99978 - The
slice 10528 Safety Utility Knife Blades, Pointed Tip, Ceramic
CIVIVI Knives Ferrum Forge Stylum Double Detent Slipjoint Front