This is Knobbles and Bobbles' pretty dotty ceramic knob, the diameter of this knob is 3.8cm and the bolt will fit through a door that is up to 2.5cm thick.
Longer bolts are available for this knob. The longer bolts are 1cm longer than the standard bolts and can be purchased from the left hand menu.
Fitting instructions can be found on our FAQ page.
Please let us know if you have any questions.
Info@knobblesandbobbles.com or 07746 357625.