Characteristics: ●Large Cutting Diameter， ●Two open/close speed， ●Adjustable Tissue Thickness， ●Knife Bunting Seat without Lip， ●Handle Design According to Human Engineering， ●Advanced drive Mechanism. Specification： Product model/ Staple qty/ Outer-dia（mm)/ Cutting-dia(mm)/ Width(mm)/ Height(mm) WH-Y-21 / 16 / 21.3 / 12 / 4 / 4.5 WH-Y-24 / 18 / 24.3 / 15 / 4 / 4.5 WH-Y-25 / 20 / 25.3 / 16.1 / 4 / 4.5 WH-Y-26 / 20 / 26.3 / 17 / 4 / 4.5 WH-Y-27 / 22 / 27.3 / 18 / 4 / 4.5 WH-Y-29 / 24 / 29.3 / 20.3 / 4 / 4.8 WH-Y-32 / 28 / 32.3 / 22 / 4 / 5 WH-Y-34 / 28 / 34.3 / 25 / 4 / 5