https://www.prokits.com.tw/Product/CP-373/

Cut, crimp, strip – 3 in 1 function
Suitable for 8P8C/RJ45 / 6P2C/6P4C/6P6C/RJ11/RJ12 / 4P2C/4P4C/RJ-22 crimping
 
1. Cutting modular cable: Place the single-bladed side of the tool's cutter facing you and cut the modular cable to the desired length. Make sure to cut the ends of the cord straight across, not diagonally.
2. Stripping modular cable (Flat Cable):

3. Squeeze handles until it stops cable must be kept perpendicular and then pull from the tool.
4. Stripping Round Cable Insert the cable into the round stripping hole, turn the crimper in counter clockwise direction and cable in clockwise at the same time.
5. Remove the outer jacket, insert the stripped cable into the plug and be sure the left wire at one and matches the right wire at the other end.
6. Place modular plug with cable into the tool's holder. Be sure the striped wire is between the tab and gold contacts. Squeeze handles until it stops.
7. 4p holder is located on the back side of the tool.