RAM® Handlebar U-Bolt Double Ball Mount for Garmin 45, 48, 89, 90, 92 HOOK-3 Series The tube is made of

The tube is made of extremely durable composite

The RAM-B-138-GOP1U consists of a 2

The RAM-B-139U-224 consists of a triple suciton cup base with a medium length B-size arm and a rectangular plate with universal AMPS hole pattern

The RAM-B-149Z-UN7U consists of a zinc coated u-bolt base

RAM® Handlebar U-Bolt Double Ball Mount for Garmin 45, 48, 89, 90, 92 HOOK-3 Series The tube is made ofThe RAM B 149Z G3U consists of our medium length B size double socket arm with our Handlebar U Bolt Base for Rails 0. 5" to 1. 25" in Diameter and our 2. 5" diameter round plate with universal AMPS hole pattern. This mount also includes the hardware needed to bolt that round plate to select Garmin GPS units. A complete list of compatible devices can be found below in the compatibility section.