Godin Guitars ACS SLIM NYLON Electric/Acoustic Guitar (Natural SG)Slim refers to the 1. 715 nut width, which is a mere 16th of an inch wider than the nut width on our standard electric guitars. If you do most of your playing on a guitar with a fairly narrow neck (most solid body electric guitars) this is the ACS SA for you. The slim neck of this guitar along with our Ergocut shaping technique and 16 fingerboard radius make for a very easy transition for steel string guitar players looking to integrate nylon string