Handheld bottle cage on the under side "Ninja" CO2 "you can attach to the CO2 inhure-ta- and cartridge. Aluminum alloy/engineering plastics L93 x W54 x x H167 mm fit 191g (including micro air booster, G CO2 cartridges (2 pieces)) Micro Air Booster/Rice, and using the corresponding screws with G/G CO2 cartridge to avoid the injury Compression * Made from CNC machined aluminum alloy head, Topeak, 仏式 when you wear the glove on. Pack of 2 CO2 cartridge/with screw 16gco2 cartridge not included The item color, about Size Item Color May Vary Depending on the type of display, actual product may vary slightly from the product image. This listing for the specification, improved the design of the logo, etc., may be altered. In addition, the manufacturers to reveal the answer your questions about the dimension and a personalized fit and you are not the actual product. Thanks for your understanding.