The Wingmaster Peterbilt Side Window Post Covers are a practical and beneficial addition to your Peterbilt 379 truck. Made of stainless steel, these covers are sold in pairs for both the right and left side. Designed to fit Peterbilt 379 models from 2001 and newer, these covers provide protection and enhance the appearance of your truck. With their durable construction and easy installation, these side window post covers are a must-have for any Peterbilt owner.