Over all Dia. 4-1/8", Cut Depth 19/64", Carbide Height 1-1/16"-1-3/16", Minor Height 19/64", Tenon Tjhickness 3/16"-5/16", Tenon Length 9/32", Bore Dia. 1 1/4". These cutters sets are designed to make V-groove paneling with a strong tongue and groove joint. Each set can be used with 1/2", 3/4", and 1" stock. Shims are included to allow the thickness of the tongue to increase as stock increases. UP190 cuts a V-groove on both sides of the paneling, and UP191 only cuts a V-groove on one side.