Neutrik's GN50 is a gooseneck made of a stainless steel spiral with a black coating (to prevent corrosion and noise).
Neutrik's GN18 is a gooseneck that's made of a stainless steel spiral with a black coating (to prevent corrosion and noise).
Neutrik's GN36 is a gooseneck made of a stainless steel spiral with a black coating (to prevent corrosion and noise).