Pro Prime Signature Series KS12 features a tapered knob, standard matte black handle, and medium barrel profile trusted by Kyle Schwarber for extra-base power. An advanced surface-hardening process—combining a Professional Series Finish with UV light treatment—creates a bat that’s 30% harder than previous Louisville Slugger Prime models. Backed by an industry-leading 75-day limited warranty (restrictions apply). Visit slugger.com for full warranty details.