Check the listing for details. Easy Installation DIY Dosing Pump 24v DC Brushed Low Noise for Aquarium Additive. Color: Amber, Condition: New. Listed at 19.88 USD. Features:Mini peristaltic pump, compact structure, ultra-small volume, width of only 58mm, maximum flow rate up to 270ml/minCan be installed side by side to save space, fully compatible with the similar friction peristaltic pump3-roller low pulse design, the tube wallis 1mm, inner diameter max 4mm, no need fittingsPrecision mold forming technology,industrial design concept, tool-free disassembly of the pump cover, easy to replace the tubeCan be equipped with rated speed DCgeared motorThe pump cover is available three colors(clear, blue or purple)Note: Do not apply lubricant to the pumptube SpecificationProduct model: BT-293KC/ZLTube size: ID*WT 1*1, 2*1, 3*1, 4*1 (standard length73mm)Roller: 3 rollersMotor: Brushed DC gear motorVoltage: 24VSpeed: 680rpmMaterial: Pump body:PA66 Pump cover: PC Roller: PA66Weight 145g Flow rate sheet: (silicon tube,watertested, 24V 680rpm)Tubing（ID*WT mm）1*1 2*1 3*1 4.1Flow rate:(ml/min) 29 114 182 270 Remarks:1. The flow dataon the above table is measured by using clean water at the normal temperatureof Jieheng Laboratory. For reference only；2. Tubingmaterial, tubing size tolerance, transported medium viscosity, suction/liftetc. will affect the flow.