Saves if you have the sample in your hand, you can buy in any house of spare parts the length of the gia no matter because they can be cut into a lathe to give the measure, it is simple only to the seller and tell you that you want gias of the measure that you have been and already, send them to ask to be very expensive and it would not be negosium in that case it combines changing the valves, if you take it to a cycle which is the one that combines for both gias and valves if 适用的。