KC MTZ universal tube clamp mounts are constructed from a highly durable lightweight Carbon Reinforced Plastic material ensuring they stand up to the test for years to come. KC MTZ universal tube clamp mounts feature easy to use adjustable worm gear to accommodate 1.5 in 2.0 in round diameters. KC has made the trouble of find a specific size mount by giving you the ability to adjust our mounts to work for most common tube diameters.