The RAM® Double U-Bolt Rail Mount for Larger Rails with Diamond Plate (RAM-138U-235-1) is everything you need to secure a RAM® device holder to rails ranging from 1.25" to 1.5" in diameter. The base is made of stainless steel double for durability and reliability in the most demanding environments. The included rubber caps for the U-bolts are anti-snag, ideal for high-traffic or industrial settings.