One Way Check Valve :This Brake Bleeder Bleeding Tool Kit Made of sturdy material, the internal valve prevents air from entering the system.Good Quality:This Brake Bleeder Bleeding Tool Kit is made of high-quality materials, exquisite workmanship, very good quality and long service life.Using soft tube for easy releasing or loosen.Easy installation:This Sucker valve pipe bleed tool is very easy to install, no additional tools are needed, and the installation process is very convenient.Simply and easy to connect with the clips to motorcycle clutch for bleeding.Packing Include:1x Brake Bleeder Bleeding Tool Kit.If you have any questions, please contact us.After sales:If you have any questions, please feel free to contact us, we will reply you as soon as possible! Specifications:Material: Aluminium & RubberTotal Length:45cmValve Length: 55mmTube Inner Diameter: 5mmTube Outer Diameter: 8mmPackage Included:1 x Brake Bleeder Tool Kit Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.