MVU14-6FBK vs MVU14-6FB/SX vs MVU14-6FB/SK

PartNumber	MVU14-6FBK	MVU14-6FB/SX	MVU14-6FB/SK
Description	Terminals C-10-1102K BS-32-6-P 82486	Terminals BLOCK FORK VNYL INS BTL BS-32-6S-P	Fork Terminal 14-16AWG 21.59mm 6.35mm Tin Case