How do you tel what brand 220 you are using. I did look on the dog but all it says is 160 or 220 or 330. So must be the dog's were changed out. No name on the dog. I do have some sleepy creek so I know what they look like. Any idea's on other brands?

Most brands are slightly different if you post a picture somebody will know.

On Montgomery and BMI traps, the brand name is on the little clamp part that holds the trigger wire. MTI and BMI.

Some models you can tell by the trigger set up. Herters is an example. Other brands have distinctive jaws and rivets.