ELECTRASTIM - PRESTIGE ELECTRA LOOPS ADJUSTABLE COCK RINGS REDCNC Machined Aluminium adjustment choke available in Red, Silver or Gold anodised finish as well as our 20th Anniversary Camouflage version. Made from solid marine grade aluminium billet The anodized finish protects the surface and insulates the choke so the rubber loop receives all the stimulation power. Thick conductive silicone distributes the electrical stimulation more evenly than our standard loops Two unipolar loops supplied in each pack.