It is important to select the correct foot press pliers and terminal. For crimping, different types of terminals require crimping foot shapes and sizes that are specific to them. In general, the head is fitted with notches that can accommodate terminals in different sizes. To ensure that the crimping action is stable and reliable, it's important to check the blade and the notch before use. Foot press pliers can be misused and cause poor connections, unreliable contacts, or even malfunction. It is therefore important to use them correctly.