AMF RPM Formula 4 Bowling Ball

Drilled axis leverage..........very quick revving ball, reads midlane nicely, good control at the break point. The trouble with these balls, was that the cover was AMF's version of Accrillyium, the cover used on Ebonite's Omega's.. Because of that, the oil didn't soak into the ball as quick, and if you didn't wipe it off after every shot, the ball just got longer and longer.......and they were pretty brittle.......could crack quite easily. Never had a problem getting this one through the heads....one plus of the coverstock, and with the drilling I put on it, a very heavy roll at the break point