The thread is 20mm internally threaded.
10 X MK 1146 WHI 150MM SHOCKGUARD PLUS PENDANT SET
MK 1174 WHI Batten Lamp Holder
MK Logic Plus - 1199 WHI - 230mm 10/13w Low Energy Fluorescent Pendant Set New
Kalium WL009C-MK warranty/support extension
MK Clearshave Luiminaire 708, Dual Voltage Shaver Socket+ Light
MK Batten Lamp Holder Shockguard BC Plus 1154WHI
