Brand new and ready for installation, one GE Corometrics Nautilus 2264HAX TOCO / 5700HAX ultrasound transducer belt knob by PacMed Parts. This belt knob was engineered to be more durable and long lasting than the original parts and meets all OEM quality specifications. Compatible Units: GE Corometrics Nautilus 2264HAX TOCO Transducer GE Corometrics Nautilus 5700HAX Ultrasound Transducer