Ciro Universal Ball Mount for 7/8 to 2-1/4 Diameter Tubes Ciro offers multiple universal mounts depending on what you are mounting and where. The Universal Ball Mount mounts to any round tubing from 7/8 to 2-1/4 with the included stainless steel clamp or 1-1/8 to 1-3/4 square tubing . Features: The Ciro Universal mount allows to you put any Ciro ball mounted accessory wherever you want Keep Ciro device holders, cup/drink holders, cameras and closer at hand Includes stainless steel ball mount, strap, and adapters