Value Collection 4256402 Square Polishing Stone 400 Grit

Product Description

The VALUE COLLECTION 4256402 is a square aluminum oxide polishing stone designed for fine honing, deburring, and surface finishing of metal and other hard materials. Measuring 6 inches in overall length with a 0.25 inch by 0.25 inch square cross-section, this stone delivers consistent stock removal and surface refinement in tight spaces and on precision workpieces. At 400 grit, it falls in the super fine range, making it appropriate for finish honing passes where a smooth, refined surface is the goal. Machinists, tool-and-die makers, and maintenance technicians keep stones like this on hand for bench work and light hand-finishing tasks.

This polishing stone is suited for bench finishing, mold and die work, and precision deburring in both shop and field environments. The square profile allows it to reach slots, keyways, and corners that round or wedge-shaped stones cannot access cleanly. The aluminum oxide abrasive is a general-purpose mineral that performs well on hardened steel, tool steel, and cast iron. It is not oil-filled, so users may apply a honing oil or light cutting fluid as needed to float swarf and extend stone life.

Key Features

• 400 grit super fine aluminum oxide for smooth finish honing and light deburring
• Square profile accesses slots, keyways, and internal corners
• 6 inch overall length provides full hand grip and reach on larger workpieces
• 0.25 inch by 0.25 inch cross-section for work in narrow or confined areas
• Not oil-filled — compatible with preferred honing oils or light cutting fluids
• Sold individually; packaged in quantities of 12 per pack

Compatibility

Designed as a general-purpose hand polishing stone suitable for use on hardened steel, tool steel, and cast iron surfaces in precision machining and maintenance applications.

Installation Notes

Secure the workpiece before honing to prevent movement during hand strokes. Apply a light honing oil or cutting fluid to the stone face to reduce loading and improve surface finish quality. Inspect the stone periodically for glazing or uneven wear; a loaded or glazed stone should be dressed on a flat lapping plate before continued use. No power tools or special mounting hardware are required for hand honing applications.