The Offset Key Spacer is a useful tool in regulating the spacing between the keys. Make sure that when using this tool that you place the tool onto the base of the pin (the part that the Front Rail Felt sits on).
This tool is designed to be used with any of the Combination Tool Handles we offer in our store. These can be found in the Regulating Tools Section of our store. Below is a demonstration video of how to square and space the keys.