The Alumacart U-Shape SUP/Kayak/Surfboard Holders – Pair is the ideal accessory for any surfing or paddle board enthusiast. Holders are fabricated with heavy duty aluminum and sold as a pair. Ideal for SUP’s, surfboards, kayaks, etc. The center post and both uprights are fabricated using 1 3/4” round aluminum pipe which slides into any Alumacart rod holder. Rod holders will be needed on the front and rear of your wagon to accommodate the SUP Holders.