Cabiraadahani wax yar way kala duwanaan karaan iyadoo ku xidhan walxaha gaarka ah ee la isticmaalayo, sida birta aan la kala saarin ama aluminium.
Waa kan shaxda tusaysa dhumucda dhabta ah ee birta xaashida ah ee millimitir iyo inji marka la barbar dhigo cabbirka cabbirka:
| Cabbirka No | inch | Metric |
| 1 | 0.300" | 7.6mm |
| 2 | 0.276" | 7.0mm |
| 3 | 0.252" | 6.4mm |
| 4 | 0.232" | 5.9mm |
| 5 | 0.212" | 5.4mm |
| 6 | 0.192" | 4.9mm |
| 7 | 0.176" | 4.5mm |
| 8 | 0.160" | 4.1mm |
| 9 | 0.144" | 3.7mm |
| 10 | 0.128" | 3.2mm |
| 11 | 0.116" | 2.9mm |
| 12 | 0.104" | 2.6mm |
| 13 | 0.092" | 2.3mm |
| 14 | 0.080" | 2.0mm |
| 15 | 0.072" | 1.8mm |
| 16 | 0.064" | 1.6mm |
| 17 | 0.056" | 1.4mm |
| 18 | 0.048" | 1.2mm |
| 19 | 0.040" | 1.0mm |
| 20 | 0.036" | 0.9mm |
Waqtiga boostada: Jul-04-2023