Pfanstiehl P-51-3 UNIVERSAL REPLACEMENT CARTRIDGE FOR ASTATIC 51-1 ASTATIC 51-2 Rock-Ola and AMI JUKEBOXES JukeBox Astatic 51-3 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 • 3 MIL SAPPHIRE NEEDLE TIP PLAYS 78 RPM. 51-3. Astatic 51-2, 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