DIMPLES EXCEL Bike Bicycle Water Bottle Cage (2 Pack) FITS MOST STANDARD SIZED WATER BOTTLES Bottle diameter around 3 will fit perfectly. The bottle diameter can be 2.7 to 3.5. Our cages are made to fit any water bottle in standard size and the cages can be bent open or closed to change the tension on the bottle. If your bottle is a bit smaller than average, you can always add a nice insulated sleeve to your bottle. Also it has enough "spring" to the rack to bend if you like a looser fit. TWO MOUNTING HOLES DISTANCE IS 65mm (Center to Center) The holes are 5.5x8mm oblong and could accommodate slight variation so that fit different widths. LIGHT AS A FEATHER, STRONG AS AN OX It only weights 2.4oz (69 g) each. Made of 6061-T6 SOLID HEAT-TREATED ALUMINIUM ALLOY TUBING. High quality material and manufacturing process for extra strength. Co-molded grip surface allows for a sure grip while riding. EASY INSTALLATION Use a 4mm hex key to fasten cages in threaded screw holes on frame. PLEASE NOTE - bike frame requires threaded holes for installation of cages. No need to go looking for the right screws. The included 4 X M5x0.8 SCREWS are standard size for mounting bicycle water bottle cages. The bottle cage fits flush with bike frame and wont scratch the frame if you have a washer creating a gap between the cage and the bike frame itself. LIFETIME WARRANTY This product is covered by Dimples Excel Lifetime Warranty. You will stay hydrated whether on city streets or dusty trails with this sturdy water bottle cage from Dimples Excel.<br> Dimples Excel bottle cages are made to fit any water bottle in standard size and the cages can be bent open or closed to change the tension on the bottle. High quality material and manufacturing process for extra strength.<br> <br> This bottle cage comes in pair and available in four colors  Black, Silver, Red, Blue.<br> <br> Dimples Excel bottle cages are made of 6061-T6 HEAT-TREATED ALUMINIUM, which is a superior material of alloy manufacturing, much better than the 5052 and 4032 aluminum. Bottle cages made of 5052 and 4032 aluminumwill bend or crack if too much force applied.<br> Moreover, it only weights 2.4oz (69 g) each, light as a feather, strong as an ox. This bottle holder fits most standard sized water bottles and adjustable oblong mounting holes. Bottle diameter around 3&#034; will fit perfectly. The bottle diameter can be 2.7&#034;to 3.5&#034;. Our cages are made to fit any standard size water bottle and the cages can be bent open or closed to change the tension on the bottle. It will be a perfect match for<span class="a-text-italic"> <u>Polar Bottle Insulated Water Bottle - 24oz</u>.</span><br> 2 X Bicycle bottle cages<br> 4 X M5x0.8 Screws<br> 1 X Hex Key<br> The cup holder made of Alloy Aluminum is able to prevent your Hydro Flask Water Bottles Stainless Steel from any marks on the water bottles outer skin, never scrape of scratch your valuable bottles or coffee thermos. It can adjusted by bending to hold the bottle or can even more securely, or to open it up to hold a larger bottle, easily bendable to accommodate different bottle sizes.