This RCA type socket is an old favorite among many audio enthusiasts. Featuring 99.996% high copper content in the dual prism spring loaded contact, WBT’s 24k gold supra-plating process and Teflon™ dielectric. Socket tightens from the outside of a chassis using the included mounting nut. The complete unit includes insulation washers to accommodate a panel thickness from 0.1 - 4.2mm.