These work and look great on my R-390A and CY-979. The long stud version works best with the thick panel on the 390A. Bill - AB0FX 1967 EAC R-390A #1828 >They have also been running these on eBay at BIN prices below >their webpage 'online' price - query seller "rackrelease" >>If you're a rack man, this product may be of interest: >>http://www.rackrelease.com/