Feature 1Use these torsion extension bars with an impact wrench to ensure consistently accurate torsion for your fasteners. 2It's nice to have all your torsion extension bars in one place. It's not just convenient for storage, it's also an easy way to transport them from place to place. 3These tools have a ball on the male end to help hold a socket. Spring loaded ball detent locks to prevent parts from slipping into machinery. 4Made of high quality chrome molybdenum steel material, corrosion resistance, strong and durable, long service life. 5Five 1/2in extension bars, including 140Ft-lbs(190Nm),120Ft-lbs(160Nm) ,100Ft-lbs(135Nm),80Ft-lbs(110Nm),65Ft-lbs(90Nm).Item Type: Extension BarMaterial: Chrome Molybdenum SteelColor: White+Grey+Blue+Yellow+GreenSpecification:1/2im square mouth140Ft-lbs(190Nm) white120Ft-lbs(160Nm) gray100Ft-lbs(135Nm) blue80Ft-lbs(110Nm) yellow65Ft-lbs(90Nm) greenApplication: Universal .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List5 x Extension Bar1 x Tool Box