Features and Benefits: Self-centering, heavy duty checks slots, grooves, recesses, cylindersHandles are up to 5-1/2" longSatin chrome finishBoth contacts release or lock by turning knob at end of handleMeasurement is read with micrometerIndividual gages #4349-#4354 are available separately4349: 5/16-1/2"; 4350: 1/2-3/4"; 4351: 3/4-1-1/4"; 4353: 2-1....(more info)