Features: Premium Material: Aluminum heat treated for a strong and lightweight design. it is only weights 31.3g each. Unique Design: The bottom of the bicycle bottle cage has a baffle design, more stable when placing the bottle. Colorful Perfect Your Bike: Premium vacuum electroplating process, makes each bottle holder metal texture, more attractive. Quick and Simple To Install: Mount to your bicycle frame at once. Use a simple hex wrench (included) to fix water bottle cages in bicycle threaded holes on frame. oval mounting holes allow fine-tuning of position on frame. 2 stainless steel bolts included. Wide Applications: The exquisite bicycle water bottle holder can place most bottles, very excellent for installation on bicycle, mountain bike, road bike, etc. Package Includes: 2 Pcs Water bottle holder . Specifications: Brand: SWTXO Product Name: Aluminum water bottle bicycle holder Material: 6061T6 aluminum Size: 148mm x75mm x 85mm Weight: 31g Color: Black silver / black red / blue silver / red gold / rainbow Craft: Vacuum plating double-layer baking varnish Application: Mountain bike, Road bike, Folding bike, etc. note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you