Rail ATV UTV Mount wDiamond Designed for a clean installation, the RAM UTV strap mount will accommodate most common roll bar sizes on UTV's, allowing for the placement of the RAM rubber ball base. The RAM UTV strap mount can also be attached to smaller diameter handlebars on ATVs using the included hardware. With the ball base in place, you have the foundation for mounting everything from GPS Devices, RAM Aqua Boxes, Spotlights and Radios. Strap Dimensions1.57 40mm to a maximum of 3.15 80mm Material Powder Coated Marine Grade Aluminum Note The U in the part number reflects product packaged in poly bag.