Bicycle Motorcycle Water Bottle Holder Adapter Double Screws MTB Road Bike Handlebar Water Cup Rack Bracket Clip Clamp. Specifications: Material: Aluminum alloy, Color: Black, Red, Gold, Blue, Silver, Product size: 77mm*53mm*20mm/3.03*2.09*0.79", Process: Surface anodization, Installation diameter: 19-40mm/0.75-1.57". Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2. Please allow 1-3cm measuring deviation due to manual measurement. Included: 1 X Bicycle Water Bottle Holder Adapter