These are very heavy duty tuners that seem incredibly reliable and hold their tuning really well. The nickel finish looks really good. However, they are quite heavy, resulting in my P bass being quite head-heavy. Not a huge issue for me but just be aware. Also, two of the tuners (the ones that ended up on my D and G strings) are quite stiff to turn, I'll have to wait and see if they loosen up with more time (I've had the tuners installed for about a month now).
I had to sand the bored tuner holes (the large holes) on my Fender J bass replacement neck a little bit to accommodate these (not very much though).