Hammer sanding guide for filing and shaping hammers using a Dremel Rotary tool. Tool is 2" long and has three different size slots for removing differing amounts of felt for shaping hammers. There are two different styles of this tool to choose from. One is threaded to fit the newer style Dremel tools which has threads when the top collar of the tool is removed. The other style is able to be used with the older style Dremel tools along with other rotary tools as it has a set screw to secure the tool. The video below demonstrates how to file hammers using this tool.