Covers tray for Refill A5 paper. You may use soft epoxy resin to make a soft-cover journal, hard epoxy resin to make a "hard cover journal"
Clear color so you can check the buttom when process project
For clay and epoxy resin crafting jewelry projects etc.
You may choose different set form the top menu, 2 silicone trays and 12 book rings for fast process projects, or do different projects in the same time
Or add more book rings as back up, as you may use it in key chain projects as well