Reasonable Design : This tool will for seat all 4 seals Both the installer and re-sizer are designed to allow both short and long shafts through the tool No worry about the length of your input shaft : milled from Billet Aluminum which is strong strength , anti-rust and to use , never break like the pastic Application : Fit for Transmissions 700R4 / 4L60 / 4L60E / 4L65E / 4L70L 1982-UP Suitable for 1982-2021 general-gearbox-700R4 / ( 4L60 4L60E 4L65E 4L70L seal installer / adjuster drive tool Used to re-size and install all short and long ( 300mm ) type input shafts Prevents seals from distortion during installation Re-sizer prevents improper seal installation, Manufacturer: Watreketal