Whidden Click Adjust Lock Ring The Whidden Click Adjust lock ring makes your standard dies function like a micro adjust die. The lock ring will fit on any 7/8 OD sizer of any brand with adjustable shoulder bump. It's easy to use the inner and outer ring that can rotate independently of each other. Each click is metered in true 1 thousandths adjustment and has .100 total available travel. The lock ring works with both conventional presses as well as the Forster CO-AX Style Press. Unfortunately this will not work with standard Dillon 550 or 650 Presses