Part of the Super Knuckle system that features a sleeve that tightens and holds a ball accessory at each end, the Super Knuckle Hex Stud Ball for Convi Clamp from Kupo moves omnidirectionally in the sleeve. It connects to the Convi Clamp's female 5/8" receiver via its non-twist 5/8" hex pin for mounting gear or accessories without a stand.
