High performance lithium battery
Brushless explosion-proof motor
Built-in high precision vacuum gauge

Filter oil mist, less pollution
Prevent oil shortage, refueling in time
Strong and durable
Suitable for occasions without ac power

| Item No. | ST-4BMC | ST-4SC |
| Flow Rate | 4.5 CFM | 4.5 CFM |
| 127 L/MIN | 127 L/MIN | |
| Pole No. | Dual Stages | Single Stage |
| Ultimate Vac. | 15 microns | 60 microns |
| Power | 1/4 HP | 1/4 HP |
| Inlet Port | 1/4" & 3/8" Flare | 1/4" & 3/8" Flare |
| Oil Capacity | 720 ml | 890 ml |
| Dimension | 363x128x276mm | 363x128x276mm |
| Weight | 6 kgs | 5.4 kgs |
| Li-ion | 18V 9Ah | |