ROCKBROS Bike Water Bottle Cage Holder Lightweight Alloy Aluminum Bicycle Water Bottle Holder CagesColor black Material Aluminum, Plastic, Metal, Rubber, Polycarbonate Brand ROCKBROS Product Dimensions 9. 45"L x 6"W x 4"H About this item Secure and Sturdy : The water bottel lock design on the top and the two durable arms will keep the water bottle staying in secure condition. This secure mechanism will protect your water bottle stay sturdily, whether riding on the bumpy road or hitting berms,the water bottle will not drop out Easy to Access: Two