16-Piece NC & NF Rethreading Die Set, 1/4"–3/4" from 3178 /per Qty. Add to Cart This item is currently on backorder, but you can still purchase it now and we'll ship as soon as more become available. 8 NC Coarse (1/4"-20 tpi, 5/16"-18, 3/8"-16, 7/16"-14, 1/2"-13, 9/16"-12, 5/8"-11, 3/4"-10 tpi) and 8 NF Fine Thread-Restoring Dies (1/4"-28 tpi, 5/16"-24, 3/8"-24, 7/16"-20, 1/2"-20, 9/16"-18, 5/8"-18, 3/4"-16 tpi) on beaded chains Packaged in telescoping clear plastic case: 1½" square x 6" long NC dies are silver zinc–plated, and NF dies are black oxided to easily tell them apart from gold zinc–plated metric dies Will not crosscut or undercut the thread the way a cutting die will NOTE: Not guaranteed when used on hardened threads or to cut new threads. Weight: 1.28 lb MADE IN USA SKU:CF16