Phonograph needle, Astatic N440, 535-SS73. Replaces: Jensen J73XSD. Used in: Jensen “R”, R2C, R3C, X2J, X3J. Used in: Admiral Y-8101 Y-8111 Admiral Y-8115 Y-8121. Tip materials.0007 Synthetic Sapphire and Radii.003 Synthetic Sapphire.