Super Duty 120,000psi Austempered Ductile Iron casting for extreme applicationsUp to 50% stronger than forged steel visesAdjustable guide rails take up wear and maintain smooth, parallel operationMicro-grooved hardened replaceable machinist and pipe jaws provide safe, secure grip on a variety of materialsComplete with 360º 3 point ADI interlocking swivel base with dual lock down handles for firm supportZinc plated handle and lock downs and durable powder coat paint resist corrosionU-shaped handle collar increases durability and supports smooth operationADI iron allows for increased clamping pressure with less metal and reduces shipping costs