Ice Crackle Finish Bike Water Bottle Holder and Adapter Combo - Green Universal Bottle Cage Mount Kit

18-30 oz Bottle Fit: Holds 18-30 oz or 550-800ml bottles (, , , Tacx, and more) securely without rattle or slip. Wide Compatibility: Two adapter spacers allow fitting diameters from 19-22mm and 30.8-33mm, suitable for road, hybrid, gravel, and mountain bikes. All-Terrain Security Hold: Flexible aluminum construction keeps bottles firmly in place even on bumpy paths or off-road trails. Handlebar or Seatpost Mounting: Can be installed horizontally or vertically on handlebars or seatposts for convenient placement. Rustproof Aluminum Build: Corrosion-resistant aluminum alloy withstands daily commutes, mountain trails, and extreme weather conditions.