It sounds like you're describing a threaded pole for a Sherlock extension pole system, which is commonly used for painting or other chores that require increased reach. The "Wooster 4′ - 8′ Sherlock Zinc Die Cast Threaded Pole" is most likely referring to a pole that can be extended from 4 to 8 feet in length and is constructed of zinc die-cast material, which is both sturdy and corrosion-resistant. This sort of pole is frequently used with various attachments for a variety of tasks, such as paint rollers, squeegees, and other instruments. The Sherlock system is noted for its robust and dependable construction, making it a popular choice for both professional and DIY users.