The Peterbilt and Kenworth Window Crank Screw is a practical and durable accessory made of chrome plated steel. With a 7/16 inch stem and 0.9G thread, this screw is designed to fit perfectly with Grand General Part Numbers 54970-54978 and 54980-54988, and may also be compatible with other models. Its high-quality construction ensures long-lasting performance, making it a reliable choice for replacing or upgrading your window crank screw.