Upgraded my cheap Squier Tele Affinity with the SG381-7 and it's a perfect fit. You het 3 short ones (for g-b-e) and 3 long ones (E A D). No drilling necessary. All you have to do is pre-drill where the screw should go and then screw the added screw in by hand. Don' worry that the angle on the guitar head is now bigger, that's actually much, much better for your string clarity. It fits perfectly. I installed ernie ball power slinky's and haven't had to tune the new strings for 2 whole days. Incredibly well make Gotoh locking tuners. It took me 15 min. to install these and I had never replaced any tuners before in my life.