For best results in setting No. G2 grommets and washers, use an Osborne No. 500 hole punch and an Osborne No. 217 setting die with corresponding sizes. Osborne grommet dies and grommet hole cutters are numbered to correspond with standard size grommets. Grommet dies and cutters should be used with a rawhide hammer or wooden mallet. We recommend the No. 395 hammer for this purpose and No. 603 Cutting Pad.