Designed specifically for use with Magma's storage rack system, R10-1001, and angled to maximize space these arms are perfect for storing SUP's or other water sports boards. Constructed with 1" Dia. 304 Marine Grade Mirror Polished Stainless Steel tubing and include Stainless Steel installation fasteners. Each arm has a tie-down point for securing boards while the pre-installed UV resistant foam padding helps protect them.