The RAM ROD HD Fishing Rod Holder - Bulkhead Base locks down heavy rods and big reels when trolling, drifting, or running between spots for salmon, musky, catfish, and striped bass. Built from high-strength composite, this holder supports both spinning and casting setups and handles rugged conditions without flex. A rotating retention ring keeps the rod secured while underway, and the swing arm rod stop converts the holder into a tube-style cradle for added control. This configuration includes a 6-inch spline post and bulkhead/flat-surface base, plus a hexagonal attachment point that pairs with C-Size and B-Size hex ball bases. GoPro compatibility lets you mount a factory GoPro directly to the holder or use a Double Ball Mount to capture strikes and fights hands-free. High-strength composite construction for large rods in rugged environments Rotating ring and swing arm rod stop secure rods during travel and strikes Hex attachment point fits C-Size and B-Size hex ball bases; includes 6 in. spline post and bulkhead base GoPro compatible with direct factory mount or Double Ball Mount for action cameras Specifications: Post length: 6' Weight: 1.36 lbs. Hole pattern: 1.3' x 3.19' Manufacturer's lifetime warranty