This pack of 20 GM OEM lug nuts, size 12mmX1.5, is a perfect fit for your Trailblazer or Envoy. These nuts are designed for the rear, left, front, and right placement on your vehicle, ensuring a secure and stable fit. The thread size is M12x1.5 and they are made of high-quality materials for durability and longevity. Whether you're replacing old lug nuts or just need a set for your next camping trip, these GM OEM lug nuts are a reliable choice. Don't miss out on the opportunity to upgrade your vehicle with a quality product that fits perfectly.