ITEM NAME:Liquid Transfer Home Fuel Pump Water Change Hand Syphon Fish Tank Multifunction Features: This is a multifunctional hand pump, suitable for fish tank water changing and fuel system pumping of various vehicle. This product features a compressible ball and two tubes, and may be operated by squeezing the ball, then releasing. Transfer virtually any liquid from one container to another in a controlled way. Lightweight and portable, convenient to operate. The liquid can be pumped out completely without causing the waste of the remaining liquid. Specifications: Tube material: PVC Pump material: rubber and copper Color: black Tube diameter: about 8mm Pipe length: about 100cm x2 Opening pressure: 0.2 bar Working pressure range: 0.2-6 bar Operating temperature range: -30 ℃-130 ℃ How to use: First insert the oil suction pipe into the oil tank, then introduce the other end into the oil tank and squeeze the rubber pump. Please pay attention to adjust the pressure at both ends during operation; And you can self-flow after pinching out the oil, without having to pinch it all the time. Package includes: 1* hand pump Notes: Transition: 1cm=10mm=0.39inch 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement..First insert the oil suction pipe into the oil tank, then introduce the other end into the oil tank and squeeze the rubber pump. This is a multifunctional hand pump, suitable for fish tank water changing and fuel system pumping of various vehicle.