. Designed specifically for use with Magma's Kayak/SUP storage rack systems, these 30" straight arms are perfect for narrower kayaks or water toys. Constructed from 1-1/2 inch diameter 304 Marine grade Stainless Steel tubing with pre-installed UV resistant Polyethylene foam padding. Sold in pairs, each arm has a convenient tie-down point for securing stored equipment and include Stainless Steel installation fasteners.