Check the listing for details. Shell Mill and End Mill Holder Tool Box Storage Organizer Rack Tool R8 Collis 3/. Condition: New, Made in United States. Listed at 16.62 USD. Made in the USA. Each purchase includes one storage holder that will hold an R8 Shell mill and the R8 End Mill Holder. Tools obviously not included. As you can see in the photo it is a Collis R8Bp 75904 3/4 inch end mill. I can do either gridfinity or flat base for the holder. I will default to a flat base unless you message me and specify otherwise before purchasing. I can also do any custom tool holder designs. Message for details or check out my other listings for more tool holding organizers and listings. I designed this for my own personal use and I use it all the time. I welcome feedback. No returns accepted; please check photos for dimensions. Just reach out with questions; thanks for looking!