All JCR Production, Inc. DVD presentations provide specific and very important exposure to the NEC® . This additional exposure is especially necessary to pass NEC® based examinations. Examination twists, snags, and sample question “wording” examples are exposed as never before in these presentations. When the presentations and workbooks are seriously studied, the prepared examinee will gain a substantial edge when taking any electrical qualifying exam. When studying JCR materials, feel free to call me with any questions or concerns. As always, we want you to be successful by passing your examination!