PNL2 --> Plug-N-Lok Padlockable Security Plug, 2"
Product Description

Plug-N-Lok Padlockable Security Plug
Replaces 2" and 3/4" plugs for steel and plastic drums
After plug is securely tightened, lock the wing in place with a padlock
Make drum security simple and cost effective with Plug-N-Lok
Protect expensive drum contents
For use with a No. 1 (ML1),or No. 3 (ML3) Master Lock®
Not to be used for shipping filled drums