The Unicab Cabochan Thumbstud adds an unique look to folding knife kits by adding a inlay stone to the thumbstud. The stone insert for this thumbstud model can be glued, bezel-set or both. These are very well made and are manufactured in the USA by KnifeKits.com. With up to eight different stone insert options, these unicab carbochan thumbstuds will work with most folding knives on the market. These thumbstuds represents the very best in knife making supplies.