Phonograph needle Astatic N630-sd, 790-DS73, replaces: Singer JTS-3. Used in: 66-22 66-27 V-L PU-1299, PU-1300 cartridges. Tip materials: .7 mil diamond & radii: 3 mil synthetic Sapphire. Speeds: 33, 45 & 78 RPM. New old stock. Great Astatic quality! 797D 3150DS 640SD 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.