Morich Bowling Balls. Featuring our new Vanguard Core Technology, a HOLE new concept More Continuation, Less Deflection, and Better Pin Carry it is truly a WEAPON OF MASS BIAS. WMB 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 Particle Cover. It's SO dramatic, you can SEE and HEAR the difference!