Grover406BC Mid-Size Locking Rotomatics Tuning Machine Set - 3+3 - Black Chrome

I installed a set of these on my PRS SE this evening. They were indeed a drop-in fit with one exception: the black hold-down screws supplied with the tuners were too small in diameter to fit the existing holes, so I had to end up using the old chrome screws. A minor detail as they are only visible from the back side, but just be aware you could run into this problem when making such a swap out. Wish they would have been bigger as that would have completed the black-out look I was going for, but that’s life. Other than that minor detail, I love them already. Installed along with new strings and I can already tell the difference in holding tune even though the new strings will take a day or two to stretch out completely. If you’re drilling new screw holes, you’ll be 100% pleased with your purchase.

These tuners work well but they're not as easy to use as the older variety, where you strung the string, clamped the string using the thumbwheel, and brought it up to pitch.. here, you have to twist the upper part of the post till it clicks, rotate it till it faces down towards the guitar. The threading doesn't go quite straight through, there's a small bend. Also, you have to maintain steady but not ridiculous pressure holding the string in place, and God forbid you should disturb the position of the upper relative to lower parts of the post, because if you do, the string has to be removed and the process begun again. Then, when you finally do get to turning the machine, the upper part of the post doesn't spin for a good half-turn to full-turn, but the lower part does - this is how you know the lock has actually taken place. Once the string is locked it seems pretty secure and the locking works well. My advice is to find the old-style tuners with the thumbwheels or get Sperzels - they still make them that way, and while you have to drill those small pilot holes for the Sperzels, it makes up for the hassle of getting the process started.

Fantastic fit into my Torero. Drop in replacement. Had the tuners changed and jamming with a fresh set of strings by 10:00am Christmas morning!!Couldn't be happier! Thanks Grover!Makes stringing a FR a breeze.The black colored mini rotomatics work fantastic.Very good tuning stability with both vintage style and FR locking bridge.Would like a black colored washer under the key for a complete black look....but hey....who gets everything they want, right?? lolHave a set in chrome on another PRS SE Custom 24 for 10 months now. Had difficulty with oem prs se tuners. HIGHLY recommend for tremolo use!

These were bought for my son who works with and loves playing the guitar. My son was very pleased with this purchase, Amazon has an endless number of guitar parts and accessories!

I have five sets of these and I am completely satisfied. Super fast tune up great stability.

These tuners have a steep learning curve.Also will not accept string gauge above .042

Excellent part, it works very well in my guitar, this part increases the sound of guitar!!

no good the high strings get clipped to easily!