Push Fit Female to barb 8 mm to 5mm

The Gardiner Push Fit fitting connects from a female 8 mm to a barb 5mm.  

Usually used to transition from 8 mm OD hose to pole 5 mm ID hose size,

For example, connect the reinforced pole hose that has an ID of 5mm and OD of 9mm to the standard pole hose with its 5mm ID and 8 mm OD.