The Klinch-Pak KP-561C-18PN heavy duty pneumatic stick stapler drives C series 1-1/4-inch crown staples 3/4-inch in length. This stick stapler is classic, durable, and has a time proven design, produced for high volume continuous use. It features a 5 Position Depth Adjustment. This industrial grade stick stapler is excellent for folding boxes, complete overlap, and more.