The SENDAK El Pump Set LP-10 is a convenient washing pump with an ON/OFF switch and an air vent. I used it to supply and drain water from the faucet in the living room to the pool on the veranda, but I am selling it because I no longer need it. Please understand that this is a used item that has been stored at home. If you purchase it together with other items I am selling, I will discount the shipping cost and a little more, so please comment before purchasing. I will ship via Yu-Yu Mercari or Rakuraku Mercari. *If you are considering purchasing, please check my profile.