RAM Rail Base with Zinc Coated U-Bolt, ATV/UTV Strap & 1"" Ball for Rails to 3.15"" in Diameter Ram stands for round-a-mount and was introduced in 1995 The most innovative product line of its kind, ram continues to Evolve into one of the most sought after accessories for electronics Ram products have quickly become an essential mounting component for a wide variety of applications Utilizing the finest Assembly hardware, durable composites, steel, stainless steel, rubber, and aluminum Mounting bases and complete kits are manufactured in the USA to perform above expectations and remain cost effective