Feature: MAINALY ADVANCE: Light weight, high strength, no deformation, clear appearance. GREAT PERFORMANCE: High cost performance aluminum alloy material, solid and firm, convenient installation, can be installed two bottle rack durable. PREMIUM MATERIAL: Using high‑quality aluminum alloy, high hardness, oxidation resistance, wear resistance and durability. SMART DESIGN: Install the water bottle adapter for riding with two water bottles on the road, this special design is convenient to pick up the bottles. PRACTICAL: Strict quality control and quality assurance, high safety factor, can be used with peace of mind. How to Use: Step 1: Place the gasket on the two pipes of the cushion. Step 2: Align the screw hole of the bottle adapter with the screw hole of the washer. Step 3: Insert the hex screw and tighten the screw with a hex wrench. Step 4: Easy installation is complete. Specification: Item Type: Double Water Bottle Holder Adapter Material: Aluminum Alloy Weight: Approx.146g/5.1oz Package List: 1 x Double Water Bottle Holder Adapter 6 x Screw 6 x Gasket 1 x Aluminum Alloy Sheet