| ITEMS CODE | SIZE | DIAMETER |
| JIRT09 | NO 09 | 22.5 CMS |
| JIRT10 | NO 10 | 25 CMS |
| JIRT11 | NO 11 | 27.5 CMS |
| JIRT12 | NO 12 | 30 CMS |
| JIRT13 | NO 13 | 32.5 CMS |
| JIRT14 | NO 14 | 35 CMS |
| JIRT16 | NO 16 | 40 CMS |
| JIRT18 | NO 18 | 45 CMS |
| JIRT20 | NO 20 | 50 CMS |
| JIRT22 | NO 22 | 55 CMS |
| JIRT24 | NO 24 | 60 CMS |
| JIRT26 | NO 26 | 65 CMS |
| JIRT28 | NO 28 | 70 CMS |
| JIRT30 | NO 30 | 75 CMS |
| JIRT32 | NO 32 | 80 CMS |