Review on 🔩 Allstar Performance ALL50826 Aluminum Cap for 1-1/16-12 Thread, -12AN (Pack of 10): Enhanced SEO-friendly Product Title by Chris Owens

much better than plastic caps. in fact you can apply a little torque to them to hold them if you need to jam some fittings. I have a fuel pressure regulator that I will check as I am using a fuel pump that does not require it. They keep the regulator dust free so it's clean when I use it again later.