Reducing cone used to step down or up in hose size and used to for connecting to machinery with different sized outlets.

it is recommended that 100mm diameter hose is always used from the extractor to the dust producing machine and then the reducing cone fitted. Using any length of hose of less than 100mm diameter will reduce the performance of the extractor and should therefore be kept to a minimum. A hose clamp should be used to fasten the hose the reducer.

from: outside diameter 75mm, inside diameter 69mm
to: outside diameter 50mm, inside diameter 44mm.Charnwood