Check the listing for details. Flynn Boring Head Model 63. Condition: Used. Listed at 100.00 USD. The Flynn Boring Head Model 63 is a high-quality toolholder designed for CNC machining and metalworking operations. This specific model is known for its durability and precision, making it a reliable option for various industrial applications. With its ability to securely hold boring heads and adapters, the Flynn Boring Head Model 63 ensures accurate and efficient machining results, ultimately improving productivity and quality in manufacturing processes.