Tour Edge Hot Launch C523 Hybrid (Right-Handed)Tour Edge Hot Launch C523 Hybrid The Hot Launch C523 Hybrid provides an extremely high Moment of Inertia (MOI) that tightens dispersion and increases overall accuracy in a compact design. This hybrid is for the player seeking optimal launch and spin rates in a minimal offset design, while still enjoying the benefits of extreme playability. New Sole Rail Design A new sole rail design on all C523 metals that extends from leading edge to trailing edge.