Looking for a more efficient way to store and carry your thread spools? Look no further than BlueFig's Thread Carrier Combo! Each Combo includes one Mini Carry Case (choose from eight, fashionable patterns), one Thread Carrier Tray and 12 pins. Each tray is capable of holding up to twenty-four thread pins, depending on the size of the spool being used. Additional trays and pins can be purchased separately and each Mini Carrier can hold up to two thread trays stacked together.