The new Synergy Double Staffs are made of 5/8" aluminum rod. Featuring a precision balance center with quality K1 Kevlar wicking, our double staffs leave no rod exposed at the ends for safer play. These original Rainbow Michael designs have been field tested for eight years and have been put to the test by countless professional fire spinners. Available in sizing from 2' 10" to 4'. Our recommended double staff size is 3 feet.