Phonograph needle house packaged Pfanstiehl 154-D2, replaces Astatic N31-1d. Replaces: Astatic A-1 (J, M or X). Used in: Astatic AC, ACD, 10L3, 11L3, 40, 41 and 42 series; 90TJB, 90TJS. Tip: 2 mil compromise diamond. Speeds: 33 & 45 mono & 78 RPM. This is a very old needle and very hard to find in good condition. New old stock. Pfanst. 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.