Lucky Shot Polished 40 Caliber Bullet Valve Stem Caps; 3. ... TOMALL offers these dice style valve stem caps in black, orange, silver, blue, red, gray, purple, green, and gold.

While valve stem caps are not essential for your engine to run, they are a solid way to protect your tire valves and help prevent the loss of air pressure over time.

The valve ‘stem’ is made in brass with nickel-plated caps. The company also produces versions with different angles – 45° and 135° as well as these 90° examples.

Your car's factory valve stem caps are really boring. If you're in the market for some interesting replacements, head over to AutoGuide.com.