8-Piece NF Fine Rethreading Die Set, 1/4"–3/4" from 1280 /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. Eight Fine NF-SAE 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, and 3/4"-16 tpi) Packaged in soft resealable plastic pouch: 3" x 4-1/2" All NF rethreading dies are black oxided so you can quickly tell them apart from silver NC and 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: 0.29 lb MADE IN USA SKU:F8