KKmoon TU-301A 8.5''Locking Ratcher Crimping Press Pliers Crimper Clamps Tools for BNC Connector 6.5/5.41/1.72mm In line with ergonomic handle design and providing a comfortable grip feeling, more convenient for operation. Labor-saving ratchet device, easy operation, clear crimping effects. Applied to crimp BNC connectors The simple operation and lock-controlled switch ensure durablity and good performance The designed optimum handle position , portable & compact structure and the ergonomic handle design reduce the fatigue degree during your manipulation