Astatic-51-1 cartridge original old version, JukeBox Astatic 51-1 Cartridge 45 a Rock-Ola and AMI JUKEBOXES 45 and 33rpm JukeBox Astatic 51-1 Cartridge OEM Astatic-51. made in USA! Cartridge Specifications: • Element Type: Ceramic • Output Voltage: 0.7 volts • Tracking Pressure: 8 grams • Frequency Range: 30-10K • 1 MIL SAPPHIRE NEEDLE TIP PLAYS 16, 33, 45 rpm records Astatic 51-1, AC-C, CAC-W, GC Astatic 51-2, AC-C-AG, AC-C-78, CAC-AGW, CAC-78, GC-AG Astatic 51-3J, 51-3M, AC-C78, GC-78