Installed on my ES-135 copy.Pros: perfect fit to models with M8 bolts; wide saddle insures doable intonation.Cons: introduced nasty sympathetic overtones of strings behind saddle; screws are loose, saddle bits are unsteady - move from side to side in the frame creating shimmering buzz.Maybe it's just the item I've received. It probably won't matter for distorted sound.For clean sound, it's probably smarter to pay double the price for a proper product, which won't put you on a wild chase after those nasty howling overtones.I'm returning it. No use.