At Bay Supply, we carry a selection of high-quality Pop rivets and rivet caps for numerous applications. Below, you'll find our aluminum Pop mushroom plugs. These decorative rivet heads are designed to fill in the top hole of a Pop rivet to smooth out the fastener and make it look more presentable. No matter where you install your rivets, adding these plugs will ensure that you have nothing but decorative Pop rivets that blend in with the rest of its environment. Purchase the Pop mushroom plug in bulk today.