Body: Semi Steel From High Strength Cast Iron & Ground
All Over
Jaws: Case Hardened & Precision Ground At Gripping Faces
& Jaws Ways
Operating Screw: Case Hardened Alloy Steel For Strength
& Wear Resistance
Thrust Bearing : Case Hardened Alloy Steel To Provide
Maximum Strength To Working Parts Provides
Higher Grip With Reasonable Torque Provided With Four Bolts & Chuck
Oprerating Key