DeMarini Steel Slowpitch Softball Bat The New and Improved DeMarini Steel bat's barrel is made from Steel. The DeMarini Steel's handle is made of C6 Composite which has a wider weave maxing out handle peformance with optimal flex. The DeMarini Steel is a single steel walled bat which utilizes the inherent strength and weight of steel for the pinnacle of single wall performance. The N2M End-Cap is tuned to absorb vibration while pushing the DeMarini F5 to its most powerful limits. Approved by ASA, USSSA, NSA and ISA. Meets 1.20 BPF Standar.