Zenport K101M Mini Harvest/Utility Hook Knife, Grape and Melon, 2.5-inch Curved Serrated Stainless Blade. Zenport K101-M 6.5 inch Serrated Mini Grape Hook Knife. Knife with curved and serrated 2.5-inch stainless steel hook blade. Handle is designed to provide excellent pulling power while cutting through stems and vines. Textured non-slip easy to grip bright orange plastic handle.