| 1. | Specification for holes in dozer end bits for earth moving machinery 运土机械用推土机端铲孔规范 |
| 2. | Phillips slotted double end bits 星形双头批咀 |
| 3. | Phillips double end bits 十字双头批咀 |
| 4. | Slotted double end bits 一字双头批咀 |
| 5. | Pozidriv duble end bits 米字双头批咀 |
| 6. | Square double end bits 四方双头批咀 |
| 7. | Torx double end bits 星形双头批咀 |