The Wrecker features the late rolling Neutron core the same core that gives the Shatter, Rising Star and Shooting Star their good lengths and strong down-lane motion. Core: Neutron (14-16#). Coverstock: 52ML Hybrid Reactive. Finish: 1500-grit Polished. Condition: Medium-Light Oil. 12# RG 2. 65 Diff . 011. 13# RG 2. 63 Diff . 009. 14# RG 2. 60 Diff . 044. 15# RG 2. 55 Diff . 042. 16# RG 2. 56 Diff . 046.