The ultimate water bottle cage holds your bottle securely throughout your ride. Interchangeable Cage Mount means that you can add tools CO2 inflator kit or inner tube holder & is compatible with all Ninja Cage accessories for basic repair & maintenance. Ninja Master+ Accessories Interchangeable Cage Mount means that you can add tools CO2 inflator kit or inner tube holder & is compatible with all Ninja Cage accessories for basic repair & maintenance. MATERIAL Engineering grade polymer CAGE OUTER DIAMETER Fits standard water bottles COMPATIBILITY Ninja Master+ Cage accessories SIZE 14.9 x 8.3 x 7.8 cm / 5.9” x 3.3” x 3.1” WEIGHT 35 g / 1.23 oz