Complete instructions on back of card.
Kit includes: one wood block, one hole cutter, one setting die and nickel grommets and plain washers.
| Osborne No. | Hole diameter when set (in) | Grommets per card | Weight each (oz) |
| K231-00 | 3/16 | 48 | 14 |
| K231-0 | 1/4 | 48 | 14 |
| K231-2 | 3/8 | 24 | 17 |
| K231-3 | 7/16 | 24 | 18 |
| K231-4 | 1/2 | 24 | 19 |
