Joined: Jan 2009
Posts: 44,231
Likes: 6,489
From: New York, NY, and High Falls, NY, USA
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
Yup, and they have ball bearings in them, which cost extra and made them spin better. If it had a shifter that was well mated to the derailleur, it worked quite well, and it was extremely durable.