Hi, Dear little angel, welcome to Jacenvly, our products are cheap and good quality, price is fair, you can't miss it. If this product is not your style, please click on our store, we have many kinds of products, there will be you like and suits you. If you have any questions about your purchase, please send us the first message, we offer world class customer service to make your purchase without your worries. Have a nice day. Cycling Bicycle Bottle Cage Road Mountain Bike Aluminum Alloy Water Cup Holder Feature： 1.IDEAL FOR MOST STANDARD BOTTLES: Snugly fit bottle diameter around 3 inches , or 40. ( can be adjusted by bending ). 2.IMPROVED DESIGN FOR SAFER HOLD: By adding 2 smooth bolt on each side of the U shaped arm, the holder clasps the bottle more securely when cycling or dirt biking. 3.6061-T6 HEAT-TREATED ALUMINIUM ALLOY: 6mm thick profile, Sturdy metal, Ultra lightweight 68g. 4.EASY INSTALLATION: Simply mount the cage to the pre-drilled holes on bike frame with allen key. Mounting hole-center distance: 25 inches (64mm). 5.Comes with 2 packs of bicycle water bottle rack; 5 x allen screws (M5x12mm), 5 x washers, 1x allen key for each bottle cage Color: Black,Blue,Red, Package Included： 2 x Bicycle bottle cage 4 x Screws 1 x Wrench Cycling Bicycle Bottle Cage Road Mountain Bike Aluminum Alloy Water Cup Holder Feature： 1.IDEAL FOR MOST STANDARD BOTTLES: Snugly fit bottle diameter around 3 inches , or 40. ( can be adjusted by bending ). 2.IMPROVED DESIGN FOR SAFER HOLD: By adding 2 smooth bolt on each side of the U shaped arm, the holder clasps the bottle more securely when cycling or dirt biking. 3.6061-T6 HEAT-TREATED ALUMINIUM ALLOY: 6mm thick profile, Sturdy metal, Ultra lightweight 68g.