12C302 - 1-1/2" x 2-1/2" Type 18 Grinding Plug, 3/8"-11 Thread

Heavy-Duty Type 18 Grinding Plug for Internal Finishing

The Walter 12C302 is a premium-grade Type 18 grinding plug designed for aggressive material removal in demanding industrial environments. Measuring 1-1/2 inches in diameter and 2-1/2 inches in length, this cylindrical plug features a flat, square end (Type 18) that is specifically engineered for working inside castings, holes, and internal radii where traditional grinding wheels cannot reach. The integrated 3/8"-11 threaded steel insert ensures a secure, vibration-free connection to straight grinders and flexible shaft machines, allowing for safe operation at high RPMs.

Manufactured with a coarse 16-grit aluminum oxide abrasive blend, this plug excels at snagging and heavy cleaning of steel and ferrous metals. The resinoid bond structure provides the necessary toughness to withstand the mechanical stress of foundry work and heavy fabrication, resisting chipping and breakage while maintaining a consistent cut rate throughout the life of the product. Whether removing flash from castings, smoothing internal pipe welds, or cleaning up machined bores, the 12C302 delivers reliable performance.

Safety and balance are paramount in the design of Walter grinding plugs. Each unit is precision-molded and balanced to minimize runout, which significantly reduces operator fatigue during extended use and prolongs the life of the power tool. The internal threaded bushing simplifies tool changes, eliminating the need for separate collets or mounting hardware. This product is an essential consumable for metalworkers requiring efficient stock removal in confined spaces.