Looking for some solid rivets for your next project? These are the ones. They're made from tough aluminum alloy (like 5050 or 5052), so they resist corrosion pretty well – good for indoor or outdoor use. The dome head gives a clean, low-profile finish once they're set. They're 3/16 inch in diameter and 1/2 inch long, with a grip range from about 0.376 to 0.500 inches (that's the thickness of the materials you're joining). You get 50 in a pack. They've got an aluminum mandrel inside; when you use a pop rivet tool, it pulls the mandrel, expands the rivet on the backside, and snaps off – leaving a tight, secure hold. Perfect for all sorts of DIY stuff, light fabrication, auto work, or general repairs. Just drill a #11 hole, pop 'em in, and you're good to go.