Quote Originally Posted by Bogertophis View Post
Those plugs are wider on one side- I'm assuming that would be on the inside, making it impossible to push out? But if the snake could pull on the probe (& they'll try) you need to make sure they can't "pull the plug" inwards.
You're correct, the plug can't be pushed out due to the inner flange. Regarding the inner diameter, I can shove my pinky through, that's about it.


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