b26-short-black-ordinary black chassis b26-short-dark gray-ordinary black chassis b26-short-cement gray-ordinary black chassis b26-high-black-electroplated plus-sized chassis b26-high-black-black plus-sized chassis b26-high-beige-electroplated plus-sized chassis b26-high-beige-black plus-sized chassis b26-high-dark gray-electroplated plus-sized chassis b26-high-dark gray-black plus-sized chassis b26-high-cement gray-electroplated plus-sized chassis b26-high-cement gray-black plus-sized chassis

primary gas rod three-stage gas rod