The UBK is a set of 5 double pointed replacement blades for the utility knives.
slice 10528 Safety Utility Knife Blades, Pointed Tip, Ceramic
CRAFTSMAN 3/4-in 4-Blade Retractable Utility Knife in the Utility
CYEAH 100 Pcs Utility Knife Blades, Thickened SK2 High-Carbon
L.H. Dottie UT6 Southern Electronics
1919 Reserve Shift™ Exchange-Blade Folding Knife, Sheath Included
Browning 3-Blade Folding Utility Knife at
RazorPro, Replaceable Blade Hunting Knife
Karambit OTF Spear Point, Double Edged Blade Silver Handle - Edge
RazorPro, Replaceable Blade Hunting Knife