Brownells “Premium Plus” stones are the very finest available, with industrial grade cobalt added to uniformly sized aluminum oxide crystals and bonded with special, cool-running adhesives to form the hardest, longest-wearing, fastest-cutting grinding points. These stones give a smooth, ready-to-finish surface on all types of ferrous and non-ferrous metals, and they resist filling and gouging while lasting much longer than “hobby” grade points.
The hardened steel shafts are nickel plated for long life and stay concentric even with repeated use. Each stone features a 1½” (3.8cm) long shank with 1/8″ (3.2mm) diameter. This 6-pack refill is ideal for gunsmiths and gunsmithing professionals who need to maintain their grinding stone inventory with premium-grade replacements that can be re-ground or re-shaped as needed.
