Aluminum alloy camlocks/couplings, from 1/2"-6", all types: A B C D E F DC DP, with high quality and most competitive prices. Aluminum alloy camlocks/couplings, from 1/2"-6", all types including: A B C D E F DC DP, with high quality and most competitive prices. Stainless steel arms and brass arms are all available aluminium hose coupling camlock