High-quality Stitcher Heads for Muller-Martini saddle binders. The DB75V can be used on all stitchers or collators which currently use the HK75 and HK75V Heads. Capacity: from 2 sheets up to 5 mm Crown Sizes: 13 mm Wire Sizes: 20-28 round or 21x25 and 20x24 flat. Works on most Muller-Martini Saddle Stitchers, including the 221, 235, 1509, the 321 and 335, the Minuteman, Prima and Valore, the Bravo-S, Bravo-T and the Presto and many others.