Customize the stem port to your design. We can furnish both special size and special shape stem ports within the following limits:
0.562 zinc maximum core diameter on the 2.000 to 2.750 hand wheels.
0.750 maximum core diameter on all aluminum hand wheels.
All 3.500 and 4.000 diameter zinc hand wheels can have a special stem port limited only by the cross section strength of the 1.000 dimension of the hub.