Available in both stiff and regular flex, our boinging knives have swept narrow blades with an upturned tip allowing the knife to cut when the tip is pressed forward. The best boning knives come in at least a couple options for blade flex. Boning knives are used for removing large bones from meat and poultry. With small handles that can be easily twisted and turned. these agile blades are designed to work well in hard-to-reach spaces like joints and around curves.