Brownells W-181 #4 Grinding Stone Refill, Pack of 6

The Brownells Premium Plus Stone Kit delivers professional-grade grinding performance for gunsmithing, metalwork, and precision fitting. Each stone is made from industrial-grade aluminum oxide infused with cobalt for superior hardness, durability, and cutting speed.The special bonding adhesive ensures cool operation while resisting gouging and loading, leaving a smooth, ready-to-finish surface on both ferrous and non-ferrous metals. Each hardened, nickel-plated steel shaft maintains concentricity through repeated use, providing long-lasting reliability.