This sturdy high-quality rod holder can be attached or removed in seconds thanks to its powerful SeaSucker vacuum mount. A single 6″ SeaSucker holds the 16″ aluminum track and 3 slide-on rod holders. Track is pre-drilled and countersunk in 3 positions for the optional mounting of a second SeaSucker vacuum cup for extra strength for applications like heavy offshore conventional reels. Just order an extra 6″ SeaSucker to build your rod holder up to the strength you need. Some assembly required.