A home owner from new jersey says:
September 23, 2016
looking for part no 39-171 but bottom detacheable clip
Tom from SWISCO responded:
September 26, 2016
Hello! I'm not quite sure what you mean. Is the clip at the end of your operator arm positioned so that it's facing the bottom? If so, you can actually pop the clip off that comes with the 39-172 and flip it around. Would that work for you?