Master Lock s chrome steel hitch ball features Master Lock s One Tool Torque™ system When used with the One Tool Torque™ Ball Mount An easy one-wrench installation The One Tool Torque™ hitch ball has notch in its base, which aligns perfectly with the steel pin on the One Tool Torque™ ball mount, securing its position and allowing you to tighten without a second wrench System works in drop or rise position and can be used with a standard ball mount 2 x 1 x 2- 1/8 chrome steel 6,000 lbs.