Technics SL-B1 SL-B2 SL-B3 Turntable Part Anti-Skating Knob Button OEM Vintage. Good preowned condition part from a 1979 Technics SL-B1 turntable. Likely could be used on various other Technics models. Please verify on your own prior to purchasing. Sold as is working part shown in photos. Ships USPS First Class Mail