Value Collection 4256307 Rectangle Polishing Stone 320 Grit

Product Description

The VALUE COLLECTION 4256307 is a rectangular aluminum oxide polishing stone used for fine finishing, deburring, and surface conditioning of metal, ceramic, and composite workpieces. Measuring 6 inches long, 1 inch wide, and 0.5 inches thick, this stone is sized for controlled hand-lapping work and tight-tolerance surface preparation. At 320 grit, it falls in the extra fine range, making it suited for final polishing passes where a smooth, refined finish is required. Machinists, tool-and-die workers, mold makers, and maintenance technicians are the primary users of this type of bench stone.

This polishing stone is used in machine shops, fabrication facilities, toolrooms, and maintenance environments where hand finishing is part of the workflow. It is well suited for removing fine burrs from machined edges, polishing mold cavities, cleaning up tooling surfaces, and blending minor surface defects. Its rectangular profile provides flat, even contact across straight edges and flat faces. The stone is not oil-filled, so a honing oil or water-based cutting fluid is typically applied during use to flush swarf and maintain cutting action.

Key Features

• 320 grit extra fine aluminum oxide abrasive for final-stage polishing and light deburring
• Rectangular profile delivers consistent flat contact on flat surfaces and straight edges
• Not oil-filled — compatible with honing oil or water-based cutting fluid
• Compact 6 x 1 x 0.5 inch size suits hand-held use and access to confined surfaces
• Sold in a package of 6 stones, supporting shop inventory and task-specific use

Compatibility

Designed as a general-purpose hand polishing stone for use on metals, ceramics, and composite materials wherever extra fine surface finishing is required.

Installation Notes

No power tools or mechanical mounting are required for use. Apply honing oil or an appropriate cutting fluid to the stone surface before use to prevent glazing and extend abrasive life. Keep the stone flat against the workpiece to maintain consistent surface contact and avoid uneven wear. Store stones in a dry location away from contaminants that could embed in the abrasive surface.