The #20 Standard Bullet Seating Micrometer is a precision reloading tool designed for accurate and consistent bullet seating depth measurement and adjustment.#20 Standard Bullet Seating MicrometerMicrometer adjustment for precise bullet seating depthStandard threading compatible with most reloading pressesEnsures consistent cartridge overall length (COL)Durable construction for long-lasting performanceEssential for serious reloaders and competitive shooters who demand precision and consistency in their ammunition preparation.