Riester Replacement Non-Chill Ring for use with:
Riester Cardiophon Dual-Head Stethoscopes - Bell Side (RST-4131-01).
Riester Duplex-de-luxe Stainless Steel Stethoscopes - Bell Side (RST-4081-01).
Riester Duplex-de-luxe Baby Stethoscope - Membrane Side (RST-4042).
Riester Duplex Aluminum Stethoscopes - Bell Side (RST-4001-01).
Riester Duplex Baby Stethoscope - Membrane Side (RST-4041).
Riester Tristar Stethoscopes - Bell Side for Large and Membrane Side for Medium (RST-4091).