Made of high-quality materials and durable. Designed to withstand harsh conditions and provide reliable performance over time. Bolt size: 5/16; Overall depth: 2-5/8; Internal depth: 1-7/8; Flange inner diameter: 3-1/2; Flange outer diameter: 5-1/4. Compatible with STEMCO 343-4024, Chicago Rawhide 1612, 1711, 1811, 506085, D0HZ1131C, 806994, 858381, 8069924, 921010002, 19QJ334, 19QJA2 9302, MCI 15L523. Features high-quality seals for a tight and secure fit, helping prevent dust, water, and debris from entering the hub. Helps extend wheel bearing life and reduce the risk of costly repairs. Includes a transparent oil window for easy monitoring of oil levels, promoting proper lubrication and preventing damage from insufficient oil. Color: silver Material: aluminum Package Contents: 2 PCS Hub Caps with Gaskets and Plugs 2 PCS Plugs Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color in the image to vary slightly from the actual item. Measurement may vary by +/- 1-3 cm.