C.S. Osborne Spur Grommet Setting Die. Sets rolled rim grommets & spur washers. 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. Properly machined and hardened. The finest industrial grommet dies made. Made in USA. Sets rolled rim grommets and washers For grommet size 0 Properly machined and hardened The finest industrial grommet dies made Grommet dies and cutters should be used with an Osborne rawhide hammer or wooden mallet, not with a steel hammer. We recommend C.S. Osborne No. 395 rawhide hammers for this purpose.