Suggested Training Tools
Prong Training Dog Collar
https://www.dog.com/Search.aspx?query=herm%20sprenger
Herm Sprenger (Recommended Brand)

2.25 mm – It is recommended to start with 16-20 inches around in length, extra links can be purchased. Dog neck sizes vary and it is suggested that links can be taken away or added for best fit.
3.0 mm – It is recommended to start with 16-20 inches around in length, extra links can be purchased. Dog neck sizes vary and it is suggested that links can be taken away or added for best fit.
E-Collar
E Collar Mini-Educator (Recommended Brand)
This product is used for training dogs to understand behavior obedience. Working level can be established for training with levels ranging from 1-100. This product can be used for up to 1/2 mile in range. Excellent for training dogs to go to off leash.
https://www.amazon.com/Bundle-Items-Collar-300-Stimulation/dp/B01CRLQBXO