The #10 Grinding Stone Refill 6‑Pack features Brownells’ top‑tier Premium Plus stones, built for demanding metalwork where consistency and durability matter. These points use aluminum oxide crystals enhanced with industrial‑grade cobalt and bonded with cool‑running adhesives, creating an exceptionally hard, long‑lasting, fast‑cutting stone that performs on both ferrous and non‑ferrous metals. They resist loading and gouging, and can be reshaped or reground without breaking down like typical hobby‑grade points. Each stone is mounted on a hardened, nickel‑plated steel shaft that stays straight and true through repeated use. Brownells originally selected their ten most‑used point profiles for the full 30‑piece kit, and these economical 6‑Pack refills make it easy to keep your set fully stocked and ready for work.