Grier Abrasives A3-GB-412 Mounted Point 60 Grit Tree Shape

Product Description

The GRIER ABRASIVES A3-GB-412 is an aluminum oxide mounted point in the A3 tree profile, designed for precision grinding, deburring, and surface finishing on metal and hard materials. It carries a 60-grit medium grade with a vitrified bond and hard density rating, making it well suited for stock removal and contour work in tight or complex geometries. The 1/4-inch shank mounts directly into standard die grinders and rotary tools. Rated to 16,100 RPM, this point delivers consistent cutting action throughout its service life. It weighs 0.16 pounds and is finished in blue for easy grade identification on the bench or in the tool crib.

This mounted point is used in metalworking, fabrication, and maintenance applications where internal bores, cavities, or irregular surfaces require controlled grinding. Typical install scenarios include weld cleanup on pipe interiors, port matching, mold and die work, and general deburring on cast or machined components. It is appropriate for both shop and field use wherever a die grinder or high-speed rotary tool is deployed. Electricians, pipefitters, millwrights, and general fabricators commonly reach for this type of point during prep and finishing tasks.

Key Features

• A3 tree profile for grinding contoured, concave, and hard-to-reach surfaces
• 60-grit aluminum oxide abrasive with vitrified bond for aggressive, consistent stock removal
• Hard density rating maintains form and edge during extended use
• 1/4-inch shank diameter fits standard die grinders and rotary tool collets
• 16,100 RPM maximum speed rating supports high-speed tooling
• Medium grade blue-coded wheel for quick visual identification by grit and hardness

Compatibility

Designed to fit die grinders and rotary tools accepting a 1/4-inch shank collet. Confirm maximum RPM rating of the host tool does not exceed 16,100 RPM before use.

Installation Notes

Installation is performed by trade professionals using a die grinder or compatible rotary tool with a properly sized collet. Always power down and disconnect the tool from its air or electrical supply before mounting or removing the point. Inspect the mounted point for cracks or chips before each use and do not operate above the rated 16,100 RPM. Follow applicable ANSI B7.1 safety standards for grinding wheel mounting and use.