PRO PRIME BIRCH C243The Pro Prime C243, an iconic Louisville Slugger turning model thanks to its huge barrel profile, is back with a fresh new look. A high gloss black handle fades into a neon yellow barrel with black Seamless Decals. A re engineered surface hardening process, including our Professional Series Finish cured with UV light treatment, results in bats 30% harder than previous Louisville Slugger Prime models.