Columbia300 has brought the Messenger back! This version of the Messenger ball introduces the PowerCOR weight block. This mid-performance bowling ball core is ultra-dense and provides a lower RG as well as hard-hitting power. The Reflex Pearl coverstock found on this ball has a 2000 grit polished finish. The core and cover combo found on the Columbia300 Messenger PowerCOR Solid is a great match on medium to light oil and provides a skid/flip reaction.