Q'nique Encoder Assembly *special order item, please allow 2-4 weeks for delivery note: lower goes on the carriage, upper goes on the machine Note - picture is used as a reference, your item may not be exactly as shown Reference: Black Spring Lower 21Pro 03 21R 15Pro & R 09-13427 Silver Spring Upper 21 Pro 03 21R 15Pro & R 09-10668 Black Spring Lower (Long cable) SM21Pro (Metal is black) 04 21Pro 09-15033 Silver Spring Upper (Short cable) SM21Pro (Metal is black) 21 Pro 04 09-15024 Black Spring Lower V5 (Long cable) SSE,X series (Metal is black) 09-15700 Silver Spring Upper V5 (Short Cable) SSE X series (Metal is Black) 09-15701