Keep hydration within an arm's reach. Whether you're installing a new bottle cage or upgrading from plastic, this anodized aluminum bottle cage from Crown Sporting Goods is "Simply Strong." Boasting an efficient, no-frills design that includes a mounting plate with a lot of wiggle room to accommodate different threading patterns, these bottle cages are simple. And thanks to their hardy aluminum alloy construction, they're strong too. Not much more you can ask from a cup holder. Engineered to fit all sorts of water bottles, your best fit out of the box will be a 3" diameter bottle, but with a quick squeeze you can personalize the fit of your bottle cage to fit your chosen bottle nice and snug. Once you're fitted, installation is quick and easy, whether on your handlebars or on your frame, with just a few screws. Hardware and fasteners not included.