This is Knobbles and Bobbles' pure white ceramic knob with fancy golden fittings, and a beautiful gold flower back plate. Theiameter of this knob is 3.8cm, the back plate 7cm, and the bolt will fit through a door that is up to 2cm thick.
Longer bolts are available from the top menu under All Knobs -> Fittings and Longer Bolts.
Fitting instructions can be found on our FAQ page.
Please let us know if you have any questions.