Good way to keep up with your shell holders - RCBS Shell Holder Racks

I bought this die holder because I found I had many shell holders from rcbs and hornady laying around in boxes, that I couldnt find when I needed them.the large pins will not allow smaller hole shell holders like lee or lyman fit over them. but if you are looking for shell holders that will let your brass fit on your shell trimmer this is one to use. the shell length trimmer will not fit on shell holders with the smaller center hole , so if your shell holder fits on the pins in this box they will work on your trimmer