simply cut a strip or square piece from the sheet as u like n than put it either in CD case or in a folder and u will never loose ur die..
There are 2 different sizes available.
This is 8" * 12" sheet
Price: Rs. 120/- per sheet
This one is 4" * 12" sheet
Price: Rs. 60/- per sheet.
I have taken this picture specially holding magnetic sheet in my hand with dies attached so u know that dies do not fall off.