This item is an authentic Ridgid part that has been sourced from the original manufacturer to be used with pipe cutters. Over time due to regular use parts tend to wear out and they may begin to fail eventually requiring replacements to ensure your tool functions properly. This kit includes all the recommended component to be replaced whe...Read moren repairing your pipe cutter. To ensure the proper procedure, refer to the owner's manual and the diagrams for your model. A screwdriver, a wrench set, and pliers might be needed to replace these components.