1/2"-13 tpi Left-Hand NC-USS Rethreading Die from 220 /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. 1/2"-13 tpi Left-Hand NC-USS Thread-Restoring Die (3/4" across the flats) For left-hand threads Gold zinc–plated MADE IN USA SKU:1/2LCD