The RAM Torque^™ Rail Base accommodates rails and bars ranging from 3.81cm (1.5") to 5.08cm (2") in diameter – the perfect mounting solution for your ATV or UTV. The include B size hex ball adapter can connect to either side of the Torque base, and is suitable for rugged environments for supporting action cameras, spotlights or other devices. Two sizing inserts – one for attachment to 3.81cm (1.5") rails and the other for attachment to 4.45cm (1.75") rails – are included to create a tight hold while nylon-insert lock nuts prevent loosening in high-vibration environments. Available separately, the RAM B Size Ball Add-On allows you to attach an additional B Size Ball to the Torque^™ Rail Base for mounting multiple devices.