Inlet - 1/4" BSPF. Outlet - 1/2" BSPM. Viscosity 100cSt/SAE10-30. Suitable for low to medium viscosity oils, mineral & synthetic motor oils, antifreeze, transmission fluiD. Riser tube length suitable for 210 litre barrels c/w 2" BSP barrel adaptor. Air connectors NOT supplied. NOT to be used for petrol, diesel or fuel oils.