The set includes two types of mandrels; no go and go. The crimp dimension is correct when the no go mandrel does not enter the fitting and the go mandrel does. Never insert the mandrel into the fitting when crimping the hose.
The set includes gauges: 3/16", 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 1", 1 1/4", 1 1/2", 2"