| MODEL | ZZ | d | D | B | Weight (g) |
| R2 | R-2ZZ | 0.125 | 0.375 | 0.156 | 1.04 |
| R3 | R-3ZZ | 0.188 | 0.5 | 0.156 | 2.21 |
| R4 | R-4ZZ | 0.25 | 0.625 | 0.196 | 4.46 |
| R6 | R-6ZZ | 0.375 | 0.875 | 0.219 | 9.02 |
| R8 | R-8ZZ | 0.5 | 1.125 | 0.25 | 11.6 |
| R10 | R-10ZZ | 0.625 | 1.375 | 0.281 | 23.5 |
| R12 | R-12ZZ | 0.75 | 1.625 | 0.313 | 53.1 |
| R14 | R-14ZZ | 0.875 | 1.875 | 0.375 | 78 |
| R16 | R-16ZZ | 1 | 2 | 0.375 | 87 |
| R18 | R-18ZZ | 1.125 | 2.125 | 0.375 | 91 |
| R20 | R-20ZZ | 1.25 | 2.25 | 0.375 | 102 |
| R22 | R-22ZZ | 1.375 | 2.5 | 0.438 | 105 |
| R24 | R-24ZZ | 1.5 | 2.625 | 0.438 | 140 |
