ali industries 7020-003 Master Mechanic, 5 Pack, 3 -Inch x 21 -Inch, Assorted Grit, Sanding Belt The product is Master Mechanic, 5 Pack, 3" x 21", Assorted Grit, Sanding Belt, For Use On Wood, Metal, Fiberglass, & Painted Surfaces. Easy to use The product is manufactured in China 5 pack of 3" x 21" assorted grit sanding belts Designed for heavy duty sanding and grinding of wood, metal, fiberglass and painted surfaces For use on power belt and bench top sanders