Bike Water Bottle Holder, Black or White Gloss, Secure Retention System, No Lost Bottles, Lightweight and Strong Bicycle Bottle Cage, Quick and Easy to Mount, Great for Road and Mountain Bikes STAY HYDRATED ON YOUR RIDE - Quick & Easy access to your bike water bottle when you need it. Great for road, mountain, hybrid, touring & electric bicycles. Buy 2 bottle cages to stay hydrated for those extra long rides, so you can go the distance! SECURE AND STURDY BOTTLE RETENTION SYSTEM ensures a full bottle stays firmly in place when riding, whether you're out riding fast on roads or bumpy trails. Fits most standard & over sized bike water bottles, including the following sizes: 20, 21, 25, 24, 25 & 33 oz / ounces (500, 550, 650, 750 & 950 ml sizes). One-piece flexible design, adjustable +/- 0.2 inches / 0.5cm to accommodate slightly smaller or larger sized bike water bottles such as insulated bottles. SUPERB DURABLE QUALITY & STUNNING FINISH TO MATCH YOUR BIKE - CNC machined aluminium alloy, heated treated for a strong & lightweight design. Powder coated finish and high tumble polished to match your shiny bike paintwork. Extremely easy to wipe off and clean. Lightweight at only 48g/1.69oz. QUICK & EASY TO INSTALL - Mount on your bike frame in under 60 seconds. Oval mounting holes allow for fine-tuning of position on frame. 2 stainless steel bolts included. IMPORTANT NOTE: Bike frame requires threaded holes for installation for bottle cage installation. Bottle cage only designed to be mounted on bike frame - seat post tube and/or angled down tube. PRO QUALITY - Were so confident about the quality of our products that if you have any product issues, were very happy to either provide a Refund or a Replacement - cant say fairer than that!