1.Adjustable spring, automatic impact, suitable for wiring in 110/88 or 66 type junction boxes

2.Precision hardened interchangeable blades unfold end pins to quickly and conveniently insert wires tightly into contact points and resist 3.corrosion. The blades cut off excess wires while completing this task

4.Suitable for various replaceable blades

5.Blades can be replaced without a screwdriver

6.The impact force of the blade can be easily adjusted by rotating the finger wheel

7.Convenient storage room with unique locking mechanism for storing spare blades