Phonograph needle 660-D7, replaces Onkyo DN-21, DN-21, DN-22, DN22, DN-23, DN23, SN-19, SN19, used in Onkyo OC-21M OC21M OC-22M OC22M OC-23M OC23M cartridges. Tip: .7 mil diamond. Speeds: 33 & 45. Tracking force: 2 to 4 grams. House packaged new old stock. HN 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.