Replaces the following needles: Shure N97, N97E, N97ED, N97B, All N97 Series. Upgrades the following needles: Shure SS39ED, SS39EJ, SS39B, Radio Shack RS649, Pfanstiehll 771-DE, 771-DED, 769-DED, 769-DEJ, 769-D7, Radio Shack RS648. Used in following cartrdges: Shure M97E, M97ED, RXT4, All M97 series cartridges, SC39, SC39EJ, SC39ED Studio . Series, M97B, Shure M97HE-AH, M97HEAH, DT50HE, M97HE, PRESENCE7 Shure RXT4, Radio Shack 42-2773, RX-T4. Diamond tip with a .0002 x .0007 elliptical radius. Speeds: 33 & 45 RPM. Manufactured in Switzerland.