["Features:\r\nBrand New\r\nCorrection rollers take adjustment action to facilitate the user to replace the tube avoid clipping and breaking the tube due to lack of experience\r\nBall bearings in the wheel frame, silent, long life time\r\nStainless steel screws, rust corrosion resistance\r\nSet the card slot to prevent deviation correction, pump damage\r\n\r\nSpecifications:\r\nMotor: 12V/24V for DC motor\r\nfor DC motor current: 0.5-1.4A\r\nWorking environment: 0-40, relative humidity, 80%\r\nMedium flow: the flow direction of this pump depends on the positive and negative connections\r\nFlow range: 0 - 400ml/min\r\nTube: inner diameterxouter diameter (6.4mmx9.6mm)\r\nwall thickness: 1.6mm, the maximum diameter: 9.6mm\r\nTube material: transparent silicone tube\r\nRoller type: ball bearing\r\nPump cover: hand twist screws, quick disassemble convenient tube replacement\r\nCan be equipped with constant speed for DC deceleration motor, stepper motor (adjustable speed)and synchronous motor, long motor life and low noise stepper motor\r\nfor Shell material: PC\r\nRolling wheel: POM\r\nQuantity: 1 Set\r\n\r\nNote:\r\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nNo Retail Package\r\nPackage Includes:\r\n1 x Large Flow Peristaltic Pump\r\n1 x Wrench"]