(Pack of 4) 3 Square Plastic Plugs |10 14 Ga - 3 x 3 Inch (for ID 2.74 to 2.83) | Flexible Ridges n Side Walls | Heavy Duty Impact Resistant 1/4 Thick LDPE Cap - Tubing Plugs

They work great. Be sure to get the right ones for the ID. Lots of poor reviews from people who either can’t read or can’t measure.

Planned to use for capping a 3x3 steel tube that supports a fence gate. However, the cap isnt large enough to gain enough friction to to anything other that sit on top of the tube. Hope I can find some with larger flexible ridges to hold tighter.

looks great and fits great

I USED THESE POST CAPS ON MY POST FOR THE GATE TO MY FARM THEY FIT PERFITLY INTO 3IN 11GA SQUARE TUBING KEEPS THE BEES FROM BUILDING THEIR NEST IN THE POST AND CAPS THEM OFF NICELY FOR A PROFESSNAL LOOK I AM VERY PLEASED WITH THESE POST CAPS AND I RECOMMEND THEM

Work and fit nicely, finished the look and keeps out the weather and bees and bugs.

Exactly as advertised! Works perfectly for 3” outside 14g square tubing.

I fell, and ripped my hand wide open because a building contractor found it cheaper not place these cheap plastic pugs. This metal 3 x 3 x 3 tall is the protection between hot water heater. So your car bumper does hit the natural gas line by accident. I gave the other to the neighbors. Safety Check your garage.

The caps are of good quality. However wasnt the right fit for my 3x3 fence tube. Tried returning the item. Says free return in the description, but its not. I gave it 3 stars because the quality is good but -2 for not being honest.

Great customer service, sturdy, just the right size.

Do the job of capping off the opened ended square tube on my boat lift look is good