Under reference ESU 41200, here is a set of 4 AC 3-rail AC axles, scale HO 1/87th, with diameter 10.8 mm and axle length 23.1 mm.
These axles will fit perfectly with your PULLMAN semi-rapid trains, your ESU passenger carriages or even the EHG 388 auxiliary secretariat carriage!
Introduction to the manufacturer ESU:
The model train manufacturer ESU specialises in designing products from model railways. The brand offers a wide range of electronic accessories for digital systems (adapters, power supplies, decoders, cables, digital control units, etc.). ESU also designs some railway equipment (locomotives, carriages, wagons, etc.) in HO 1/87, N 1/160 and TT 1/120 scales.