Phonograph diamond needle branded Astatic, N1538-7d, 636-D7. Replaces: Sansui ST-10; Mikro Seiki V207; Mitsubishi 3D-23, 24, SP-22; Coral V-30D, V-7000. Used in: Sansui AT-3M; Mikro Seiki C-2; M207; Mitsubishi DMC-6001, DMC-6002; Coral CP-30D, CH-7000D. Tip: .7 mil diamond. Speeds: 33 & 45 RPM. New old stock. N1538 N1621 N1622 2828 2965D 3957D A617 DMC-600 3D-23M 3D-24M SP-22 SP843 AT3M APS-310 APS310 W-520STD 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.