Hornady Lock-N-Load 4-Blade Outside Diameter Deburring Tool

The Hornady Lock-N-Load 4-Blade Outside Diameter Deburring Tool is a precision steel case-prep accessory designed to remove burrs from the outside edge of brass cartridge cases, leaving clean, uniform case mouths that feed and chamber smoothly. It drops directly into Hornady's Lock-N-Load Quick Change Hand Tool for fast, repeatable case prep at the reloading bench.

Built around four hardened steel cutting blades, this deburring head smooths the outside edge of cartridge cases in a single pass. The silver-finished tool threads on with a standard 8-32 mount, so it is also compatible with any hand tool that accepts that thread pattern, making it a versatile upgrade or replacement for the reloading bench.

Whether you are prepping a batch of fresh brass or touching up cases that have seen multiple firings, this 4-blade outside diameter deburring tool delivers quick, clean results every time and is an essential finishing step for reloaders who want consistent case dimensions and reliable chambering.