I needed a bit holder to use when running a job. This attaches to the front of my Onefinity Journeyman and has enough spaces to hold the tools needed for the project and places for er11 collets. I utilize my larger bit tray for storage and organization, and this one just for the project I'm working on. I get the bits for all tool changes for the project and have them ready in the Bit buddy1. Helps with my workflow and keeps my jobs organized.