Although this is a small, quiet running extractor it has enough power to extract dust and wood debris from many small woodwork machines eg saws and planers. The inlet diameter is 100mm(4"), the outlet into the bag is 100mm(4") and the airflow is sufficient to handle the majority of waste likely to be produced in the small home workshop. A useful feature is that it is fitted with castors and a grab handle for easy movement around the shop. It can be used either on the floor or suspended from a sturdy wall using the two hanging brackets provided. Please note that this is a chippings extractor and should not be expected to collect every particle of fine dust. As with all the high volume low pressure airflow machines, the inlet should not be restricted to below 75mm diameter and the bag should be emptied regularly. NB). Supplied without any 100 mm extractor pipes or clamps needed for connecting to a woodworking machine.