Value Collection 8906242 Rectangle Polishing Stone 320 Grit

Product Description

The VALUE COLLECTION 8906242 is a rectangle polishing stone made from aluminum oxide abrasive material. It measures 4 inches in overall length, 0.5 inches wide, and 0.0625 inches thick. Rated at 320 grit, this stone falls in the extra fine grade category, making it suited for finish honing, deburring tight tolerances, and light stock removal on metal, ceramic, or composite surfaces. Machinists, tool and die technicians, and precision fabricators use extra fine stones like this to refine edges and surfaces after rougher abrasive work is complete. The rectangular profile allows access to slots, keyways, and narrow flat surfaces that larger stones cannot reach.

This polishing stone is used in precision metalworking, tool maintenance, and surface finishing applications. Its slim 0.0625-inch thickness makes it especially practical for working inside confined areas such as mold cavities, narrow bores, and close-tolerance slots. It is a dry-use stone and is not oil filled, so no honing oil is required for basic applications, though light oil may be used at the operator's discretion to improve cutting action and extend stone life. Suitable for use on hardened steel, soft metals, and similar workpiece materials in shop and maintenance environments.

Key Features

• 320 grit extra fine aluminum oxide abrasive for finish-level honing and polishing
• Slim rectangular profile at 0.0625 inches thick allows work in confined slots and keyways
• 4-inch overall length provides sufficient reach for most bench and hand honing tasks
• Not oil filled — compatible with dry use or light honing oil application
• Consistent aluminum oxide construction delivers uniform cutting action across the stone face

Compatibility

Designed as a general-purpose replacement or consumable polishing stone for hand honing, bench finishing, and precision deburring operations where a 320-grit extra fine rectangular stone is specified.

Installation Notes

Polishing stones are hand-held or fixture-mounted consumables and do not require powered installation. Secure the workpiece firmly before applying the stone to prevent slipping and uneven material removal. Inspect the stone face before use and dress it on a flat lapping plate if the surface shows glazing or uneven wear. Follow applicable shop safety practices including eye protection when performing any abrasive finishing operation.