The hole underneath is 1.5mm.
Detailed BR Oil Type Tail Lamps Model Railway Black 10 X OO Gauge
Detailed BR Oil Type Head Lamps Model Railway Black 10 X OO Gauge
Detailed BR Oil Type Tail Lamps (kit L1) - WITH CRYSTALS - OO Gauge (Pack of 6)
Detailed BR Battery Type High Intensity Head Lamps (kit L43) - WITH CRYSTALS - O
BR Oil Type Tail Lamps - TT:120 Scale (Pack of 10) - L5
BR Oil Type Lamps - N Gauge (Assorted Pack of 12) - L13
