The Brownells #28 Solid Carbide Drill Bit is built for the demanding task of drilling into hardened firearm components, delivering the precision and control professional gunsmiths rely on. Its single‑flute geometry cuts clean, consistent chips even in extremely hard steels, producing true, chatter‑free holes without crumbling the material or work‑hardening the surface. At 2 inches long, it offers the quill clearance needed when working with scope‑ and sight‑mounting jigs, making it easy to use in tight or specialized setups. When properly handled, this carbide bit resists binding and breakage, and its cutting action helps prevent the hardened hole surfaces that often lead to tap failure during threading.

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WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).