Featuring our new Vanguard Core Technology with Lower Torque Block, a HOLE new concept More Continuation, Less Deflection, and Better Pin Carry it is truly a WEAPON OF MASS BIAS III. WMB III offers a 75% Stronger Mass Bias and a 20% Faster Spin Time than our previous core designs, and is surrounded by an all new Versatile Ultimate Hybrid Pearl Cover. It's SO dramatic, you can SEE and HEAR the difference!Weapon of Mass Bias 3Product Type Bowling Balls