Replaces: Pfanstiehl 169-DS73, 170-DS73, 169-DS77, 170-DS77, Astatic N74-sd, N74sd. Used in: Astatic 275D 349D 351D. Tip.0007 diamond and. 003 synthetic sapphire. Speeds: 33, 45 and 78 RPM. Color may be red or black.