Phonograph needle replacement branded Astatic, N2504-7d. Replaces: Sony ND-50 ND50, Goldring 706. Used in: Sony VX-50 VX50, JVC DT-1021 DT1021. Tip: .7 mil diamond. Speeds: 33 & 45 RPM. Tracking force: 3 grams. New old stock. PM29P1D Search my store titles and descriptions. Enter your needle no., cartridge no., or brand name. E-mail for further help. IF YOU ARE PURCHASING A NEEDLE Model numbers are provided in manufacturer’s references for the cartridge they installed in those models. If the cartridge has been changed by a dealer or user, this needle will not be correct for the model numbers listed, as it is the cartridge that determines what needle is needed. Be sure it looks like your old needle.