Review on 🔩 VTR TR-416 1.5" Metal Valve Stem (Outer Mount) - 4 Pack by Veteran Tire and Rubber by Quinton Dawon

When you first install them, they make a high-quality impression. The nut size is 14mm but note that depending on the design of your impeller it may be difficult to machine a 14mm deep recess in the impeller to tighten the valve. I installed them on a 2003 Dodge Ram with factory alloy wheels. The wheel has a drilled hole where the valve is installed so I needed a very thin walled bushing to fit that hole. I couldn't find a 14mm head that was thin enough so I had to use a 9/16" head instead. Not all wheels are made this way, but be careful if yours are.