Max. Trim Thickness (Finished Booklet): 3/8", 2 head stitcher, Belt Delivery, Saddle stitcher, Cycling speed: 1800 to 5000 book per hour, Min. Book Size: 4" x 7", Max. Stitch Space (Center to Center): 9 3/4", Min. Stitch Space (Center to Center): 2 1/8"