The Roadworks Peterbilt Unibilt Lower Cab Bracket is a practical and durable solution for installing a Unibilt sleeper or daycab on your Peterbilt 379 or 389 glider truck. Made of chrome plated steel, this bracket is built to last. Sold individually, you will need 2 brackets for a Unibilt sleeper install and 4 brackets for a daycab or non-Unibilt sleeper install. With its universal fit, this bracket is a reliable choice for truck owners looking to enhance their vehicle's functionality.