We gathered our customers ideas and reloading experience with hand dies, and partnered with the experts who make them, to introduce the new Sinclair/L.E. Wilson Micro-Adjust Bullet Seater. It features easy-adjust seating depth capabilities with a simple turn of the die body. Sinclair/L.E. Wilson Micro-Adjust Bullet Seaters are detent-bearing driven with positive "click" increments of .0005" for fast, accurate bullet seating depth adjustments. Here are the details of construction: Each seater stem is custom fitted to the seater body ensuring close tolerance fit Precision-cut threads allow bullet seating depth adjustment in .0005" increments Mfg: Sinclair International