| Diameter |
| 28.00mm |
| Weight |
| 1996 – 2015: 7.30g 2012 standard – to date: 6.99g |
| Composition |
| 1996 – 2015: Ring: nickel, Core: .92 copper, .06 aluminium, .02 nickel 2012 standard – to date: Ring: Three-ply nickel plated steel, Core: Three-ply brass-plated aluminium bronze |