RCBS / Lee / Lyman / MEC / shell holder magnetic dry erase board.
Organize and label your shell holders and access easily. 
This is a dry erase board with super strong magnets on a strip sized to hold 10 shell holders.
Now you label your shell holders by chart number and size or label any way you wish.
Just wright on the board then erase if need and start over.  
Size is 5"x12"
Two holes at the top if you would like to attach it to the wall.  You can also drill additional holes easily if needed.  
Message me if you are looking to have custom size board made.