... and sizes available, Customers' designs are welcome led flashing pin, magnetic flashing badge, promotion gift 1)Material:PCB+Epoxy resinic ... .3)could do any customer design,.4)LED light color and quantity can do customized5)Different ... pin tightly it will flashing in demanded colors light and stoped when unscrewed. flashing badge ,blinking badge, glowing badge ,led flashing magnetic pin, blinking pin