Specifications:Color: blue + black + orange.Material: ABS gun body, blocked PVC head.Gun body dimensions (L x W): 23.5 x 28 cm (approx). Blocked head size (diameter): 5cm, 6cm, 11.5cm, 20.5cm. Instructions for use: (1) Before use, the tube size should be blocked. Select the shape to select the appropriate "plug".(2) After installing the plug, you can inflate the cylinder. The method is the left hand to hold the body, the right hand hold the handle, the Tic breath complete the whole trip at least 10 times until the best pressure is reached. At this time, the gas cylinder was under pressure, as the product pictures. (3) Firmly press the "connector" against the outlet, so that it is closed, then quickly pull the trigger, beat the flow of air, the hose in the socket must be pushed. Can be repeated the action to definitely confirm the pipeline flow - If the toilet and the pipeline are without water, you can add thermal expansion and contraction to the pipe to make it work later.Precautions:(1) When the pipe is clogged, it is advisable to insert soft deposits so that the pipe is close to the full block. (2) Before pulling, with a plastic towel or other things, the mouth of the toilet mouth will cover water so as not to splash on your own body.(3) If the swimming pool or the sewage channel has several overflows, please ensure that the other overflows are closed before working, so as to prevent impurities leak accidentally or affect the digging effect.Contents:1 drain pump.4 blocked heads. Note: The data are all manual measurement, please allow 1-3cm error, Due to the light and display difference, there are will have some color difference, depending on the physical item received.