Advantage：
1. Processing two products at once.
2. Adopt floating tightening, stable quality.
3. With inner angle pulling function.
4. Multiple processes are connected to reduce labor costs.
5. Add chamfering angle to reduce one process.
| Small broach | Double broaching | |
| Processing range | 43-70 | 70-110 |
| Quantity of once process | 2 | 2 |
| Power system | Compressed air | Compressed air and oil pressure |
| Efficiency | 1.5-2 S/P | 2-3 S/P |
| Radius height precision | 0.015 mm | 0.015 mm |
| Depth of parallelism | 0.02 | 0.02 |