UPDATE: removed the Zero Fret, see later post. Yup. Needed a new nut on my Clapton Strat and I have never owned a guitar with a zero fret so I sprung for the 30 bucks for one from Stew Mac. I must admit I was somewhat intrigued by the concept. The Strat one comes shaped for either a flat or curved nut slot. My strat has a curved nut slot so you carefully sand or file the raised center nub until the shelf in the nut sets perfectly even with the fingerboard. You sand the back of the nut until it and the new fret wire fits the slot like a glove. It comes with different size fret wire and you use the smallest one that works with out buzzing. After the fit is correct and the fret wire is selected you cut the wire to length and shape the ends of the nut and wire. Pretty simple really, and bulletproof proof when it comes to string height and no chance of string binding when using the trem. I left it in with just string pressure for a few days to see what I thought. So far so good. I glued it today with just a drop of Super Glue and the same for the fret wire. It was cheap and is easy to replace if I decide I don’t like it.