Clamp 4 Prong Prem Boss. A four-prong, cork-lined clamp. Made from high-grade aluminium alloy, with non-toxic blue powder finish, and stainless steel T-pin type screws. Accepts items up to 105 mm diameter.The rod version has stainless steel 14 cm rod of 10 mm diameterThe boss version attaches to rod up to 18 mm diameter.
