Crafted from precision CNC-machined stainless steel, these pilot stops are designed for seamless compatibility with the new Redding Case Neck Gauge and Flash Hole Deburring Tools. Engineered to fit both new and resized case necks, their unique, slightly undercut shape prevents interference from imperfections at the case mouth or neck/shoulder junction. This innovative design ensures smooth, accurate indicator readings when paired with the Case Neck Gauge. Two size options are available: a small size for 9/64 inches mandrels used in .17 and .20 Cal cases with small flash holes and a larger size for standard 3/16 inches mandrels, compatible with tools from other manufacturers. Built for precision and versatility, these pilot stops elevate case preparation to the next level.