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Here's an inexpensive protective plug for swivel connections up to 2½” in diameter. It features two adjustable metal plates installed on the back of the plug so that it can be easily mated with your local thread. Once adjusted to size, the metal plates are locked in place by a central metal bolt. The plug can be re-installed in place by fire department personnel after shutdown. Available in red only. Ship. wt. 1 lb.
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