*Brand-name parts *Most competitive prices *Best Product performance *Prompt delivery *__* Palm CouplingThread:1/2COLOR:YELLOW,BLUE.RED.every one will be tested before delivery.1)size: M16, M22, 1/2BSP2)types: automatic and manual3)OEM NO.: 33402601104)shape: with dustproof cap and without dustproof cap5)Material: cast iron, aluminium6)use for connect with the air brake system of the heavy truck, ...