This is Knobbles and Bobbles' beautiful clear glass ball shaped knobble. the glass ball measures 40mm in diameter. The knob will protrude by 45mm and bolt the bolt length is 40mm. The bolt diameter is 4.5mm. The bolt can't be made any longer but you could shorten it with a small hacksaw at home.
Each knob is supplied with the glass head and metal fixings including bolts and washers.
Any questions? Please email us on firstname.lastname@example.org.