Introducing Tectran's Universal Hub Caps -Universal Fit: These hub caps are designed for universal six-bolt applications, making them versatile for various vehicle types -Secure Mounting: They feature five and a half-inch bolt circle mounting holes (six) suitable for 5/16\" bolts, ensuring a secure fit -Durability: Built to last, these hub caps are impact-resistant, capable of withstanding tough road conditions -Complete Kit: Each kit includes all necessary plugs and gaskets, simplifying the installation process -Vented Design: The center fill plug is vented to maintain proper pressure and ventilation within the hub -Oil Level Monitoring: Equipped with a clear polycarbonate oil sight window with level markings, allowing for easy oil level monitoring -High-Quality Housing: Crafted with a high-quality cast-aluminum housing, ensuring durability and longevity Upgrade your vehicle's hub caps with Tectran's Universal Hub Caps, offering a universal fit and robust construction for reliable performance on the road.