MINOURA Bicycle Pet Bottle Pet Cage Mini for 500ml PET Black PC-500 Cage/Drink Holder, 2, Bottles, (Anodized Finish)

The material is a flexible 5056 light alloy. Because it simply inserts like a typical bottle cage, it can be easily attached and detached with one hand. The unique rounded backrest shape securely holds the bottle and prevents it from shaking from side to side. Aluminum bolts are not included.