VERSATILE: Are you still worried about not having enough space or holes predrilled to install a bottle cage? ROCKBROS bicycle bottle cage adapter solves these problems, it can be installed on your bicycle handlebars, bicycle seat post, bicycle frame. The hinged mounting system is quick and easy
SUPERB STURDY MATERIAL: Made of high-strength aluminum alloy CNC-machined, heated treated for a strong & lightweight design, smooth surface and rust-proof
HUMANIZED DESIGN: The water bottle handlebar mount could be rotated 90 degrees to suit mounting position, you can adjust it horizontal or vertical according to your habit, making you easier to pick up water bottles
DIMENSIONS: This bike cup holder adapter comes with 1 spacer and 1 rubber piece let you customize your bike mount from 21 to 31.8 mm(0.83-1.25 in) diameter
WIDELY COMPATIBILITY: Suitable for Road Mountain bike, e-bike, kids bike and communt bike. Perfect for biking, camping or traveling etc. The double bottle mount design will solve your water shortage troubles during long rides