This extremely flexible dual-purpose adaptor can be used either as a stepped power tool adaptor or to create a bespoke dust extraction port.
If the dust producing machine has no extraction port, this adaptor can be attached using the four screw holes in the flange, allowing a suitable hose to be connected to it.
The adaptor can also be used to connect directly to a 2.5″ diameter extraction system and the stepped profile be adjusted to suit the port of the power tool.