CU Splice Reducer, Barrel A 1/0 Flex G,H,I,K,M,DLO, 1/0 AWG (B/C), Barrel B 4 Flex G,H,I,K,M,DLO, 4 AWG, Standard Barrel, Internal Chamfer, Tin Plated, Connector is UL/CSA, 90?C Up to 35kV, Kit comes with Clear Heat Shrink, Pink/Gray Color Code, 12/8 Die Index.