Check the listing for details. Command Urma Modular Boring System Extension B13-40-40-045. Condition: New. Listed at 49.99 USD. This Command Urma Modular Boring System Extension is a top-quality toolholding accessory that is designed to meet the needs of professional machinists. With a Shank Type of Modular Connection, this adapter is the perfect fit for your CNC machine. The B13-40-40-045 model is specially manufactured in the United States to ensure top-notch performance and durability. The brand, Command, is well-known for producing high-quality workholding and toolholding equipment. This boring head adapter is no exception. It is perfect for use in the metalworking industry and is designed to hold your cutting tools securely in place. This adapter is categorized under Adapters & Holders and Boring Head & Adapters, making it easy for you to find exactly what you need. Feel free to check out my other great items for sale!!