2 kinds of rated working voltage are provided for you to choose - 12V and 24V.Features: 304 Stainless Steel Wheel Frame- The wheel frame of the peristaltic pump is made of 304 stainless steel, which is solid and corrosion-resistant, less power consumption, less noise than plastic one. Ball Bearing Design- The wheel frame of the self-priming pump has ball bearing, which is silent, heavy duty and can serve quite a long life. Adjustable Flow Direction- The flow direction of the peristaltic pump depends on the connection way of positive and negative. Easy to Use- Pump cover is no valves and seals, convenient hose replacement, easy maintenance. Wide Range of Applications- The vacuum pump can widely be used in the field of experimental, biochemical analysis, pharmaceuticals, fine chemical, biotechnology, pharmaceutical, water treatment, environmental protection, etc.Specification:Model: G928Installation Method: L PanelMotor Type: DC Brush MotorMotor Power: 12V,24V(Optional)Pump Head: Roller Peristaltic PumpPump Shell: Transparent PCPump Material: Food grade Platinum Vulcanized Silicone HoseRoller Bracket: 304 Stainless SteelFlow Range: 500ml/minTube(internal dia.*outside dia.): 6.4mm * 9.6mmProduct Weight: 287gPackage Size: 10 * 6 * 10cm / 3.9 * 2.4 * 3.9inPackage Weight: 295g / 10.4ozPackage List:1 x Peristaltic Pump1 x Wrench