Precision CNC-machined from stainless steel, these pilot stops are specifically engineered for use with the new Redding Case Neck Gauge and Flash Hole Deburring Tools. Designed to fit both new and resized case necks, they feature a distinct, slightly undercut shape that minimizes interference from imperfections at the case mouth or neck/shoulder junction. This design ensures smooth, accurate indicator readings when used with the Case Neck Gauge. Two sizes are available to accommodate different applications: a small size for 9/64 inches mandrels, ideal for .17 and .20 caliber cases with small flash holes and a larger size for standard 3/16 inches mandrels, compatible with tools from other manufacturers. These pilot stops deliver the precision and reliability that discerning handloaders expect.