Package includes?Quick connect device (red) 1Quick connect device (green) 1Product manuals 1Tip: If you receive the package, there are missing parts or due to logistics resulting in broken packaging products can not be used, please contact us as soon as possible, we will help you solve the problem as soon as possible, to save you time. If there are any problems in the process of use, you can also contact us, we are happy to help you solve the problem.