A few tips for connecting the surge arrester to improve its connection.
Wiha electric screwdriver
https://amzn.to/3VL9gtS
Knipex scissors
https://amzn.to/4ctbS6K
Crimping tool for terminals
https://amzn.to/3VR2hzu
Knipex shears
https://amzn.to/4cqOg2w
https://amzn.to/3LgkcdX
Two-pole distribution terminal block
https://amzn.to/3zzfa9Z