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The 2017 National Electrical Estimator has a complete cross-referenced index. Find the subject you need in the left column. Then click on the subject link in the right column to jump to the costbook page.

2017 National Electrical Estimator

Subject Subject links
Cable fittings 
  twisted pairBaluns, RJ11 to BNC plug, twisted pair cable  | RJ45 plug to BNC plug