Master of the universe
On the lower level display of the Strong N204 power chuck resting on the 15” hard jaws, you will find a set of 5” master jaws displayed on its wedge plunger.

Master jaws are one of the most important components of a hydraulic power chuck assembly. Plus, they are shiny and pretty, like the rest of the steel we stock. I like master jaws because their look and feel is much different than hard top jaws or soft jaws. See the T-slots for jaw nuts? A perfect fit. A match made in…chuck land.