This original TECHNICS AM-FM Tuner dial SSM175-4 is the perfect replacement part for your SA-310, SA-410, and SA-510 receiver. It is an electric tuner dial that is compatible with Technics brand and designed specifically for these models. This item is a must-have for any Technics collector or enthusiast, as it allows for optimal tuning and precise sound quality. Whether you are in need of a replacement part or simply upgrading your existing receiver, this tuner dial is a reliable and high-quality choice.