RAM Mounts Clamp Mount, 2.5 in Max Width, 1.5 in Diameter Ball, Double Socket Arm, 4.75 in Square Base, VESA 75mm and 100mm Hole Patterns, Powder Coated Marine Grade Aluminum, RAM 246 247U 25 A Bass Pro SKU 3956913 Textile Uppers: Durable and breathable VIP781889534373MN Textile Uppers: Durable and breathable material ensures long lasting wear and keeps feet comfortable The top layer features orthopedic gel that not only massages your muscles but also helps dissipate body heat The RAM Mounts Clamp Mount is engineered to deliver dependable performance with its robust construction from powder coated marine grade aluminum 5 inch maximum clamp width allows secure attachment to various square tubes and surfaces