Gemlux Heavy Duty Bluewater Rod Holders have become the industry standard for offshore fishing boats, featuring a screwless installation. Gemlux Heavy Duty Bluewater Rod Holders have become the standard for offshore fishing boat rod holders. They feature a cast 316 stainless steel construction, along with a screwless design that eliminates the need for screw holes in your gunnel. Installation requires the use of Gemlux’s installation socket. Designed for extra heavy duty applications and available with swivels, the Heavy Duty Bluewater Rod Holders are perfect for big game trolling, deep dropping, and daytime swordfishing.