The Frankford Arsenal Dielocker Lock Rings are precision-engineered reloading accessories crafted from anodized aluminum with a split-ring design for superior durability and locking force. Featuring graduation marks every .001" these lock rings enable minute die adjustments with exceptional precision for both pistol and rifle cartridge reloading.3-pack of Frankford Arsenal Dielock Lock Rings with included wrenchAnodized aluminum construction for maximum durability and lifetime performanceCompatible with all standard 7/8"x14 threaded diesGraduation marks at every .001" for precise die adjustmentsSplit-ring design provides exceptional locking force while protecting die threadsSlim profile wrench and lock rings fit easily in tight spaces on progressive and turret pressesPerfect for reloaders seeking precision and convenience these lock rings seamlessly integrate into existing setups and work with almost any press and die combination for enhanced reloading accuracy.