SFBONTTRK-ADP | Sierra Flame Adaptor Kit (2 Adaptors: 4" Flex to 4" Hard and 6" Flex to 6-5/8" Hard) | Boston 36570444807SKU:BONTTRK-ADPInventory ID:03610603Select Item:Price: $90.00Quantity: Sierra Flame Adaptor Kit 2 Adaptors: 4" Flex to 4" Hard and 6" Flex to 6-5/8" Hard Boston 36 Reviews Choose your rating12345