I switched the original tuners on my "77 Jazz bass to Hipshot Ultralites and the bass weight went from 9.75 lbs to 8.59 lbs measured on a digital scale. I can't believe how heavy those old tuners are (the kind with the big metal plate and four screws). I weighed the tuners after I removed them and they weigh 1.27 lbs for the set of four. Dang, I should have done that years ago! Best $60 I have spent in a long time.