The Yamaha RGX 121DM is a solid body strat-like guitar. It's made in Taiwan and manufactured between 1995 and 2000. It has an alder body with pickups mounted directly on the body, hence the D in the model name, in an HSH configuration. The neck is made of maple and so is the fingerboard. A rosewood fingerboard version of this guitar is the Yamaha RGX 121D. The version with the double locking trem would be the Yamaha RGX 421DM.