Contents: 1 BioSonic US100R Unit with Handpiece Assembly and FootSwitch, 1 Ultrasonic Scaler Insert USG1030KSP, 1 Ultrasonic Scaler Insert USG1030KSP, 1 Water Line Assembly with Filter, 2 Spare Filters, 2 Spare Filters, 1 Quick Connect, 1 Owner's Guide.