Industrial-Grade Foam Marine Thru-Hull and Emergency Drain Plug, Original, Color Varies, 9 x 5

The plug is much larger than it appears on line. Soft and pliable I believe it will perform well/

This little plug saved may boat. I was replacing hose and was un aware that a ball valve on a through hull fitting had failed. I had to put the plug in to stop the leak. It worked as advertised

I ordered this and the Mini, this one is huge! It would have to be a significant hole, like a thru hull breaking off at the hull, but it would do the job, too big to test - that would be a challenge.

I liked the price and convenience of delivery vs getting it at West marine.

This product is exactly as described, It was delivered quickly and now on my boat. As you might expect I hope to never need to use this, but I like the idea of it being available to me in the event of an emergency.