Crafted from precision CNC-machined stainless steel, these pilot stops are tailored for seamless use with the new Redding Case Neck Gauge and Flash Hole Deburring Tools. Engineered to properly fit both new and resized case necks, their unique, slightly undercut shape prevents contact with imperfections at the case mouth or neck/shoulder junction. This thoughtful design ensures smooth and accurate indicator readings when paired with the Case Neck Gauge. Comes in two sizes, the smaller option fits 9/64 inches mandrels for .17 and .20 Cal cases with small flash holes, while the larger size is designed for standard 3/16 inches mandrels, offering compatibility with tools from other manufacturers. Built for precision and versatility, these pilot stops elevate case preparation for precision handloading.