Brownells Premium Plus stones are built for serious metalworkers who need durability, consistency, and fast material removal. Each point is made from aluminum oxide crystals enhanced with industrial‑grade cobalt, then bonded with cool‑running adhesives that keep the stones cutting aggressively without overheating. They leave a clean, smooth surface on both ferrous and non‑ferrous metals, resist loading and gouging, and can be reshaped or reground as needed—far outlasting typical hobby‑level points. Every stone is mounted on a hardened, nickel‑plated steel shaft that stays straight and true through repeated use. Brownells bundles their 10 most commonly used shapes, three of each, into a compact 30‑piece kit, with affordable 6‑Pack refills available to keep the set ready for any job.