text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_2071644_2 (flange_thickness__mm_ VARCHAR, weight__kg_m_ VARCHAR)
  ### Question:
  What is the flange thickness when the weight is 19.9?
  ### Answer:
  SELECT flange_thickness__mm_ FROM table_2071644_2 WHERE weight__kg_m_ = "19.9"