Hub cap, 6 lug, type 1, painted wheel. Gmc, steel wheel, 6 lug, without chrome. Yukon XL, hub cap, steel wheel. Aluminum wheel, gmc with silver. Hub cap Yukon, denali. type 1 silver. Helps protect your vehicle's wheel hub, cv shaft (if equipped), and wheel fasteners from dust and moisture\ Helps enhance vehicle appearance\ This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors