TETRA LUFT DIFFUSERADJUSTABLE FOR COURSE, MEDIUM OR FINE BUBBLES.SUCTION CUP HOLDERS.FOR USE IN FRESH OF SALTWATER, OZONE SAFE.CAN BE COMBINED FOR INCREASED LENGTH.20" LENGTH.CAN BE CLEANED FOR PERMANENT USE.BRAND NEW OLD STOCK! Powered by eCRATER . List your items fast and easy and manage your active items.