1. Pneumatic type. 2. Upgrade version of BA1100. 3. Comes with chain ... motor. 4. It will save more than 60% of air. Pneumatic Vacuum Waste System1. Powered by compressed air.2. Suck rags ... & model of overlock machines(PEGASUS, JUKI, SIRUBA, BROTHER,KINGTEX, ETC). Pneumatic Vacuum Waste System With Sensor (BA1101)