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 5 (5/8" 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.