Features: Easy Installation: Can quickly and easily installed on the Bicycles frame, the cylinders can mounted to meet the occasional tire repair and pumping needs of Cycling. Solve Drinking Problems: Can directly locking on the for chair bows and transferred to expand and add two Bottles cages. You can carry two water bottles at a for time, so that you can drink water conveniently, no need to worry about drinking water for long-distances Cycling. High Strength: Use high-strength aluminum Alloys screws, stainsless steels, cannot disassembled no need special tool. Corrosion Resistance: 6061 aluminum Alloys treatments, high strength, good toughness, wear resistance and corrosion resistance. Smooth Cycling: Aluminum Alloys integrated molding, stable installation and not fall down. Specifications: Materials: 6061 aluminum alloys (heat treatments) Size: about 13.5x8x0.2cm/5.31x3.15x0.08in Optional Color: Black, Colorful Quantity: 1Pc Package Includes: 1pc Bike Chair Cage Stand note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.