Phonograph cartridge with stylus and guard and special mount, Astatic 345. Replaces: Zenith 142-140, Zenith 142-142. Uses N56, N56-sd needle. Speeds: 33, 45 & 78 RPM. New old stock. Tested. Search my store titles and descriptions. Enter your needle no., cartridge no., or brand name. E-mail for further help.