| Model | 8664 |
| Motor Type | Brushless |
| Battery Type | Lithium-ion |
| Battery Specification |
20 V 4000 mAh |
| No-Load Speed | 125 /min |
| Torque | 110 N·m |
| Shaft Diameter | ∅20 mm |
| shaft material | 40Cr |
| Shaft Hardness(HRC) | 48-52 HRC |
| Max. Drilling Diameter | ∅150 mm |
| Max. Drilling Depth | 800 mm |
| Maximum depth with extension rod | 1800 mm |
| Dimensions (Length × width × heigh) | 355x195x300 mm |
| Weight | 3.66 kg |
| Packaging | color box |
| Accessories | 1pc φ150mm drill , 1pc Battery pack , 1pc Charger |