? Perfectly suited for mounting on the UTV roll cage, UTV front bumper, ATV roll bar, motorcycle bull bar, off-road vehicle roof rack, Jeep head rack, trucks or even on kayak rails and large handlebar that meet the dimensions specified above. (Please Note: Before purchg, please measure the diameter of the mounting rail to confirm whether this ball mount fits your rail). ? The 1.5 inch ball base compatible with RAM Mounts and BRCOVAN any C size 1.5 inch ball double socket arm. Work for other devices with 1.5 inch swivel ball mounting pattern. Great for marine electronic mounts, fish finder mounts, GPS Chartplotter mounts, industrial tablet mount, industrial Monitor mount, navigation device mounts, camcorder mounts, rod holders and much more in a wide variety of applications. ? The C size 1.5'' Ball bar clamp mount accommodates round rails 1.5 inch (38.1mm) / 1.75 inch (44.45mm) / 1.85 inch (46.99mm) / 2 inch (50.8mm) / 2.1 inch (53.34mm) in diameter. An Allen key is included with the package to facilitate your installation. ? The tube clamp kit comes with four soft rubber ring inserts that provide a snug fit and protect the mounting surface. Rubber ring insert diameters: 1.5" (38.1mm), 1.75" (44.45mm), 1.85" (46.99mm), 2.0" (50.8mm). The rubber ring can be increased or decreased according to the diameter of the round rails. The tube clamp mount have a 2.1" (53.34mm) diameter mounting hole without the rubber ring insert. ? The main body of the round rail mount is made of 6061-T6 aluminum alloy material with CNC machining and iii grade hard anodized surface for durability and reliability in the most demanding environments. TPU over-molded ball head, non-slip and wear-resistant. With C Size 1.5'' ball joint.