PVB Knuck. (Stabilized maple burl with white G10 core)Single finger knucks are both fun to fidget with, and can privide a last ditch defensive tool that can easily be carried on everyday items like your car keys. What make these stand out? The strikingly beautiful stabilized maple burl features unique grain stuctures that are unique in every single knuck made, which means no two knucks will look alike. The resin stabilized wood is further reinforced with a G10 core, meaning these knucks are tough!