C.S. Osborne Midget Grommet Setter. For setting plain rim washers and grommets. Mostly for home and hobbist use. Made in USA. Sets plain rim grommets and washers For grommet size 4 (1/2" hole when set) Osborne grommeting dies and grommet hole cutters are numbered to correspond with standard size grommets. The dies are guaranteed to set the proper size and style grommets. C.S. Osborne & Co. is a manufacturer of specialized hand tools designed exclusively for upholsterers, auto trimmers, awning and canvas workers, furniture makers and other professionals in related trades. For generations, the family run business has always taken great pride in engineering the highest quality tools and offering our products both here in the United States and abroad. C.S. Osborne produces the most extensive line of custom tools available -and we guarantee that our tools will deliver excellent quality and superior performance.