Sturdy high-quality rod holder that can be attached or removed in seconds and has a holding strength of more than 120 pounds for the 4 1/22'' cup or 210 pounds for the 6'' cup! Comes with a single 4 1/2" or 6'' SeaSucker, 16" universal track mount, and 3 rod holders. Track is lightweight anodized aluminum and has pre-drilled, countersunk holes in 3 positions for the optional mounting of 2 cups to the outside for extra strength for applications like heavy offshore conventional reels. Just order extra 4 1/2" or 6" SeaSuckers to build your rod holder up to the stength you need. Some assembly required.