Adjustable Multi-Size Clamp: The 1 inches ball clamp mount is equipped with 3 soft rubber ring inserts to provide a fit and protect the mounting surface. Firmly fit 0.875 inch (22mm) / 1 inch (25.4mm) / 1.125 inch (28.6mm) / 1.26 inch (32mm) diameter motorcycles, mountain bikes, off-road vehicles, road cars, golf carts, electric scooters, ATVs and other roller round handlebars. Aluminum alloy: 1 inch ball tube clamp mount with CNC machining and iii grade hard anodized surface. Resists corrosion, scratches, and extreme temperatures for rugged durability on trails, water, or highways. Rock-Solid Grip: Zero Vibration – Heavy-duty clamp holder locks tightly on round rails even during rock crawling, mudding, or high-speed rides. No wobbling or slipping—keeps devices in harsh conditions. Wide Application: The 1'' Ball Round rail bar mount compatible with RAM Mounts B size 1 inch ball double socket arm. Ideal as a round rail mounting base for motorcycle phone mount, bike phone holder, action camera mount, tablet mount and navigation device mounts. Easy Installation: One-piece design with hinges, bolt clamp design doesn't require you to have a lot of hands to install at a few seconds. Keep locking more stable than crab clips when you drive on bumpy roads. Please note: Before purchasing, measure the diameter of the mounting track to confirm whether the ball rack is suitable for your track. LOKTENWO Aluminum Alloy 1'' Ball Mount Compatible with RAM Mounts B Size 1 Inches Ball Double Socket Arm, Adjustable Handlebar Base Fit for Round Rails 0.875'' / 1'' / 1.125'' / 1.26'' in Diameter