This is Knobbles and Bobbles' bright blue 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.
Bolts for this knob that are 1cm longer are available from the left hand menu.
Each knob is supplied with the ceramic head and metal fixings including bolts and washers. Any questions? Please ring us on 07746 357625.