A hole diameter of 25mm to 32mm is suitable for fitting the 7" tap and 30mm to 34mm is suitable for 8" wooden taps. A 38mm to 44mm diameter hole is suitable for fitting a 10" tap.
My barrel water feature arrived today and it is fabulous! Thank you so much. It is beautifully made and I am really pleased with the quality of the product and the speed and efficiency of your customer service Katie Hill, Sandyford