Due to State and Federal Law, we sell Syringes and Needles only to the Medical Facilities. Unit with 5 cm2 (Mfg #INT001) * Ultrasound system has 5 cm2 soundhead which offers 1 MHz and 3.3 MHz frequencies, 10%, 20%, 50% and Continuous Duty Cycle selections and Head Warming. Optional 2 cm2 and 10 cm2 soundheads are interchangeable with unique Electronic Signature control. Dual Frequency Clinical Ultrasound System * *