How Long Does LEGO® 12V Sleeper (Track) Contacts for Old Motor Type I and II (704) Take to Build?

A typical builder finishes LEGO® 12V Sleeper (Track) Contacts for Old Motor Type I and II (set 704, 2 pieces) in about 5 minutes.

PieceTick estimates build time from piece count, part complexity, the set’s age rating, your experience level, and how you sort pieces. Adjust those on this page for an estimate matched to how you build.