Have a 1st quality NIB 15# GP2 for sale. Trades possible ONLY for 15# NIB. Has a 3 3/4" pin and 3.5 top. MB IS off line. This really is not a problem for a good ball driller. I would be glad to lay this ball out for anyone interested if they give me the measurement, PAP, rev rate, and ball speed of person using it. VERY good heavy oil ball. Shoot me an offer....my zip is 44053 for shipping.