The Klinch-Pak KP-561PN heavy duty pneumatic stick stapler drives C series 1-1/4-inch crown staples from 5/8-inch to 3/4-inch in length. This lightweight and well-balanced stick stapler is designed 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.