Features: brand new and high quality With 17mm ball for head 17-45mm large range clamp. Bicycle handlebar mount clamp, open max 45mm, suitable for 17-45mm/20-45mm size rods. The clamp with extrusion helps to hold more firmly. Reinforced nylon material with rubber ball mount. Suitable for GPS navigator, bicycle, motorcycle and driving record. Specifications: Material: Nylon + Glass Fiber Ball Diameter: 17 mm/0.67 inch 17mm Ball Mount Clamp Suitable Pipe Diameter: 2-4.5 for cm/0.78-1.78 inch 17mm Ballhead Clamp Base: Applicable for 17-45mm Pipe Diameter Type: 17mm Ball Mount Clamp/17mm Ballhead Clamp Base QR Mount Clamp: Approx. 7x3.5 for cm/2.76x1.38 inch Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Piece Motorcycle Mount