In-Line Dual Tabbing Means PRODUCTIVITY. FAST - tabs up to 16,500 pieces per hour. Applies two tabs in one pass. Accepts material up to 1/4" thick. Designed to run in-line with the L-300 Labeler or AF-371 Feeder. Accurate to 1/16" of an inch. Can operate with a variety of equipment. Applies RENA translucent or paper tabs to meet postal discount requirements.