Yosoo 6V DC DIY Dosing pump Peristaltic Dosing Head For Aquarium Lab Analytical Water

size : Driver size（Φx H）:Dia.32 x Height 23(mm) Pump head size(Φx H):Dia. 54 x Height 46(mm) Installtion hole:47mm pump tube: nner diameter 2mm Outer diameter : 4.5 mm flow direction: you can control the flow direction by the positive and negative connect Feature: Silent work Suitable for aquarium, chemicals, liquids, dosing additives Packahe includeds : 1 * 6V DC DIY Dosing pump Peristaltic dosing Head