Shell Lock Punch - Compatibility:  Works with any fold-able flight!  The revolutionary new product that allows you to use a Shell Lock Ring with any fold-able flight.

Description: The Shell Lock System provides three advantages:

• 1. A stronger hold between the flight and the shaft.
• 2. Improved aerodynamics, as the grooves hold the flight open at 90-degree angles.
• 3. Protection from Robin-Hoods and deflections. The heavy-duty all-metal construction ensures that every punch is perfectly clean and consistent, so no more wasted flights.