4pc Nut Splitter Set • 9-12mm • 12-16mm • 16-22mm • 22-27mm • Splitting of Seized Bolts and/or Over Tightened Bolts Without Damaging the Thread. • Chrome Molybdenum Steel Blades with Forged High Carbon Steel Grips. • Hardened, Tempered & Chrome Plated for Rust Resistance.