The Carr Lane CL-4-EXP-1.00 Expanding Pin is a high-quality toolholding solution designed for CNC machining and metalworking applications. This 1/4" cam handle arm is a new old stock (NOS) product from the reputable brand Carr Lane, ensuring durability and reliability in your workholding and toolholding needs. With its expanding pin design, this product provides a secure and versatile grip for a variety of tool setups, making it a valuable addition to any manufacturing process.