✔ 最佳答案
Then you need a slim bladed screw driver and gently release the tension on the flat spring that locks the tools in place. I hope you know what spring I'm talking about.
In this photo, you can see the flat spring with a small right angle piece on the inside of handles, near the pivot point of the tools (not the pliers). Can you see it? Lift it up gently then bring one of the tools up to a 90 degree angle.