The Fisher Castaloy-R Med. 3 Prong Clamp Extension Blue Clamp Yoke is a vintage original tool designed for full depth clamping. Made by the reputable brand Castaloy-R, this clamp extension is a unique addition to any laboratory project. With its three prongs and blue clamp yoke, it provides a secure and reliable grip for precise and efficient work. Perfect for collectors of vintage tools or professionals in the scientific industry, this extension offers a versatile and durable option for a variety of projects.