Big bertha alpha driver new even lower price save 50 offbig bertha alpha features the revolutionary gravity core to maximize distance in the most advanced driver weve ever madegravity control adjustabilitywhatrsquos the story on gravity control adjustability letrsquos break it downfor the first time ever the gravity core lets you adjust unwanted spin independently of launch angle so you get completely optimized ball flights and longer distance you want an extreme low spin driver y