Very closely matched pair of RCA 6L6G (ST-shaped) beam power pentodes-used-fully tested. One tube tests 4900 uMhos, 42.4 ma. And the other 4980 uMhos, 42.1 ma. with a baseline of 3350 uMhos. Tested on Hickok AN/USM-118B tube tester. Will be packaged in white tube box.