Ships from HongKong.Our practical design and high quality aluminium alloy bottle cages will hold a firm grip on your water bottles while still allowing them to slide in and out easily. They are strong, yet it is possible to manipulate the shape to make it suitable for different sized water bottles. Size:as shown in the figure. Material:Aluminium Alloy. The included screws are standard size for water bottle mounts. Fits most standard sized water bottles. Easy installation and Easy use.