20 Pack Aluminum Oxide Abrasive Flap Disc Kit 4.5 Inch x 7/8 Inch T27 With 40/60/80 And 120# Grit

Used for common use of grinding and polishing metal, non-ferrous metal, iron, cast iron, and sanding weld joint.

T27 flat faced discs are better on flat surfaces and will produce a more consistent finish.