For Tube Type: 12AX7, 12AT7, 12AU7, EL84, EZ81, EL844 etc.
Crown width: .110" (2.79mm) Crown Height: .057" (1.45mm) Stainless Steel
Crown width: .110" (2.79mm) Crown Height: .057" (1.45mm) 18% Nickel Silver
For Tube Type: 12AX7, 12AT7, 12AU7, EL84, EZ81, EL844 etc.