Black plastic parasol base (water reservoir) - brand new (Hanworth RG12)

Black plastic parasol base (water reservoir). Approx 18" in diameter. Looks like it will fit 20mm - 30mm poles. Support element stores in base when not in use. From the Range. Claimed to take bigger pole sizes but didn't and now too late to return. Please state when you can pick when replying (there's someone around most of the time).