An emery roll is a type of abrasive material that is commonly used in industrial processes for grinding and polishing surfaces. It is made by coating a flexible backing material such as cloth, paper or plastic with a layer of abrasive particles, typically composed of emery or aluminum oxide.

Emery rolls are often used in metalworking and woodworking industries for applications such as deburring, surface finishing, and polishing. They can be used on a variety of materials including steel, aluminum, brass, and wood. Emery rolls come in various grit sizes, with higher grit numbers producing a finer surface finish.

Size:

• Width: 1 inch to 12 inches
• Length: 10 yards to 100 yards

Grit:

• Coarse (40-60 grit): used for heavy material removal, such as grinding and shaping
• Medium (80-120 grit): used for moderate material removal, such as surface preparation and smoothing
• Fine (150-220 grit): used for light material removal and finishing, such as polishing and buffing

Note that the specific size and grit range of emery rolls may vary depending on the manufacturer and intended use. It is important to choose the appropriate size and grit for the task at hand to achieve the desired result.