I've got the ones from Simo at UKGB that Wes recommended, and they're very good. To add another point to Jonathons', make sure that the length of the bolt is appropriate for the hole that it's going in (ooo er!)- if the bolt is too long, then as you screw it in, you'll hear a nice *crack*, where it's pushed the fretboard off of the neck.... not that it happened to me :P (just took a hacksaw to the bolts to make them 3mm shorter) Very secure method, and i much prefer it to a neck plate, it looks much better too imo.