BFowler (FOW72-520-222) Disc and Rotor Combo Kit ReviewbP PP Fowler (FOW72-520-222) Disc and Rotor Combo Kit PCarbide tipped anvil faces and positive locking nut on spindlePJaw depth: 3.5"PDigit counter graduations: .001"PVernier graduations: .0001"PMeasuring range: .300"-1.