The Pro Prime Signature Series RA13 features a high-gloss black AJ10 handle with a natural I13 barrel and a slightly end-loaded swing weight, exactly what reigning MVP Ronald Acuna Jr. looks for in a bat. An all-new surface hardening process, including our Professional Series Finish paired with UV light treatment, results in bats that are 30% harder than previous Louisville Slugger Prime models. The Pro Prime RA13 is accompanied by an industry-leading 75-day limited warranty. Restrictions apply. Visit the Limited Warranty page on slugger.com for complete details.