Serious anglers know that a secure rod setup makes or breaks a trolling day on the Great Lakes, rivers, or coastal waters. Smackdown Rod Holder Bases deliver rock-solid strength with anodized black aluminum construction that resists corrosion and hard use in fresh or saltwater. These bases keep your rod holders locked in place. Each base comes with stainless hardware for fast, clean mounting, and the precision machining ensures a snug fit for your boat's track system. Proudly made in the USA for anglers who demand reliability season after season. See the chart below to find which base fits your setup. Durable anodized black aluminum resists corrosion and wear in harsh fishing environments Includes stainless hardware for simple installation and lasting hold Made in the USA with precision machining for exact fit and alignment Model Boat type 23 Degrees Mount Sea Ark. 3 x 1 x 7/8 in. 55 Degrees Mount Alweld, Avid, Crestliner, some Excel, G3, Havoc, some Lowe, Lund, and Polarcraft. 3 x 1 1/8 x 1 in. 90 Degrees Mount Trackers, some Lowe, some Lund, most Ranger, Ambush, some Crestliner, and Avid. 3 x 1 1/8 x 1 in. 61 Degrees Mount Excel Stormcat. 3 x 1 1/8 x 1 in. Pontoon Square Rail Mount 1 in. and 1 1/4 in. Square Rails on Pontoon and other boats Narrow Flat Rail Mount Boats with flat rails. 2 1/2 x 1 x 5/8 in. Tri-Flat Rail Mount Boats with flat rails and no tracks. 2 1/4 x 2 x 5/8 in. Dipped Track Mount Kayak tracks, Mirrocraft boats, & flat rails. 4 x 2 in. 7/8 in. Rail Mount Boats with 7/8 in. round rails 1 in. Rail Mount Boats with 1 in. round rails 1 1/4 in. Rail Mount Boats with 1 1/4 in. round rails 1 3/8 in. Rail Mount Boats with 1 3/8 in. round rails 3 in. Track Mount N/A Made in the USA