About this item Ball bearing in wheel frame, low noise, long service life. Stainless steel bolts, corrosion resistance. The pump is designed for easy disassembly, cleaning and maintenance. The flow direction of the peristaltic pump depends on the type of positive and negative connection. Suitable for Product description Features: The ball bearings are located in the frame of the wheel and guarantee a low level of noise and long life. Stainless steel screws for corrosion resistance. The pump head is designed for easy disassembly, cleaning and maintenance. The flow direction of the hose pump depends on the positive and negative connection type. Suitable for aquariums, chemicals, liquids and other dosing additives. Specifications: Hose material: yours or transparent silicone. Housing material: polycarbonate. Scroll wheel: POM. Pulley type: ball bearing. Motor: 12 V DC. DC motor current: 0.5-1.4 A. Flow rate: 0-400 ml/min. Hose inner diameter: 6.4mm. Tube outer diameter: 9.6 mm. Wall thickness: 1.6 mm. Maximum diameter: 9.6 mm. Operating temperature: 0-40C. Relative humidity: 80%. About the weight. 273 g. Includes: 1 flexible high-flow pump. 1 Allen key.