Model No: NBM - 11 Roller Size: 4 Nos. X 230mm Lg. Main Inputs: 230v, 50Hz or 110v, 60Hz, AC RPM: 30 RPM Mixing Time: 15 to 20 Minutes Weight: 2.0 Kg. Net Capacity: Vaccutainer 6 Nos of - 4 ml Or Bulb of 5ml x 15 Nos.