Description: U-Bolt Base For Motorcycle Bike Handlebar Mount High strength composite and stainless steel construction Fits handlebars Up to 32mm in DIAMETER. Reducer included. Mounting Ball size 1" This u-bolt base contains a 1" rubber ball The zinc coated metal u-bolts accommodate rails from up to 1.26" in diameter Specification: Mounting Type: Handlebar Material: Powder Coated Marine Grade Aluminium Ball Size: 1" (25mm)Rubber Ball U-Bolt: Accommodates rails from Up to 38mm in diameter Zinc coated steel (not rust proof) Package Includes: 1 Set Motorcycle Bike Handlebar Mount Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 3. Instruction is not included. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you