The 382C312-50-01-0 from TE Connectivity Aerospace, Defense and Marine is a blow-molded transition breakout heat shrink boot with a 2:1 ratio, black, 12, rated Y.
The 382C312-780-0 from TE Connectivity Aerospace, Defense and Marine is a black heat shrink transition breakout boot with a 2:1 (Y) shrink configuration.