This tool can be purchased with a vacuum attachment suitable for lead abatement

Model:  NS-4500 Electric Needle Scaler w/o vacuum     875.00

Also available for lead abatement is the HEPA Backpack Vacuum

NS-4500 Electric Needle Scaler

24"

30 minutes full on trigger time and 30 minutes rest.  This is just a guideline.  If your ambient temperature is +20 degrees you'll rest before the tool needs to.  Pay attention to the warmth of the tool.  That's the same for any electric tool.