That's right. This universal splice box can be used without a soldering station. Just twist the wires inside and add the hot meld glue:

1. Print the splice box
2. Peel off the insulation
3. Insert the wires into the box
4. secure the wires using cable ties 
5. Twist the wires together
6. Fill in the box with hot melt glue
7. Place the lid
8. Wait for the glue to set and you're good to go