Mirka hand dust extraction block

I want to get one of these for sanding coving with the curved attachment. Does anyone know if it'll fit the hose from the deros or if I need to get the specific hose for this block?

http://www.decoratingdirect.co.uk/viewprod/m/MIRKA_HAND_DUST_EXTRACTION_SANDING_BLOCK_70_X_125MM/