These Moy Yat style blades were made for a customer using our "Custom BJD" program. The Evolution butterfly swords incorporate design insights of Moy Bah Hugh, close disciple of Grandmaster Moy Yat, and Modell Designs LLC. The high performance blades showcase unique features and precise balance that maximize functionality and versatility. Moy Bah Hugh's seal is etched into this commemorative Ving Tsun weapon.