Value Collection 4256310 Rectangle Polishing Stone 320 Grit

Product Description

The VALUE COLLECTION 4256310 is a rectangle polishing stone made from aluminum oxide abrasive, designed for fine finishing, deburring, and edge honing on metal, plastic, and composite surfaces. At 320 grit, it falls in the extra fine category, making it appropriate for final-pass work where surface finish matters. The stone measures 4 inches in overall length, 0.25 inches wide, and 0.0625 inches thick, giving it a slim profile suited to tight grooves, slots, and precision surfaces. It is not oil filled. Machinists, tool and die workers, and maintenance technicians are the primary users of this type of stone.

This polishing stone is used in applications requiring controlled material removal at a fine level, including cleaning up burrs on machined parts, refining valve seats, smoothing keyways, and finishing close-tolerance fits. Its narrow rectangular profile allows access to features that larger stones cannot reach. The extra fine 320 grit designation makes it appropriate for work where surface integrity and dimensional accuracy must be preserved. Sold in a package quantity of 12, it is a practical bench stock item for shops and field kits.

Key Features

• 320 grit aluminum oxide abrasive for extra fine finishing and deburring
• Slim 0.0625 inch thickness allows access to narrow slots and tight features
• 4 inch overall length provides adequate leverage for hand honing passes
• Not oil filled, compatible with dry use or user-applied honing fluid
• Rectangle profile for consistent contact on flat and grooved surfaces
• Sold in a package of 12 for bench stock and field kit replenishment

Compatibility

Designed as a general-purpose hand honing and finishing stone suitable for use on metal, plastic, and composite workpieces wherever an extra fine aluminum oxide abrasive is appropriate.

Installation Notes

This stone is a hand-held abrasive tool and does not require mechanical installation. Secure the workpiece firmly before applying the stone to avoid inconsistent contact or surface damage. If used with honing oil or fluid, apply sparingly and keep the work area clear of slip hazards. Inspect the stone for cracks or chips before each use and discard any damaged stones.