Rod style setting standards are designed to preset all models of the CDG Series gages for accurate inspection of API threaded connections. Each set of standards consists of two precision ground rods that are ground to lengths in accordance with API Specification 5B. All the standard styles and connections are available please refer as below chart.


| Thread Type | Connection | Pin Standard | Box Standard |
| Buttress | 4½” Buttress | CDGR-412B-P | CDGR-412B-B |
| 5” Buttress | CDGR-5B-P | CDGR-5B-B | |
| 5½” Buttress | CDGR-512B-P | CDGR-512B-B | |
| 6⅝” Buttress | CDGR-658B-P | CDGR-658B-B | |
| 7” Buttress | CDGR-7B-P | CDGR-7B-B | |
| 7⅝” Buttress | CDGR-758B-P | CDGR-758B-B | |
| 8⅝” Buttress | CDGR-858B-P | CDGR-858B-B | |
| 9⅝” Buttress | CDGR-958B-P | CDGR-958B-B | |
| 10¾” Buttress | CDGR-1034B-P | CDGR-1034B-B | |
| 11¾” Buttress | CDGR-1134B-P | CDGR-1134B-B | |
| 13⅜” Buttress | CDGR-1338B-P | CDGR-1338B-B | |
| 16” Buttress | CDGR-16B-P | CDGR-16B-B | |
| 18⅝” Buttress | CDGR-1858B-P | CDGR-1858B-B | |
| 20” Buttress | CDGR-20B-P | CDGR-20B-B |



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