Rrd37 - 7"designed for medium sized containers 2.5" - 3" rrd series wicks are a cotton-cored, pre-waxed and tabbed. The rrd series is a directional, round wick with a cotton core and tension threadswicks are wax-primed, pre-cut and tabbed with 20mm round base and 6mm neck tabsincreased fuel to flame when burning, less carbon buildup and smokingfor orders over 10,000 please contact 817-727-5802 or e-mail at chris@rwco.shop. Quantities available up to 500,000