PLEASE NOTE THAT REPLACEMENT SPLIT CHASSIS WHEEL SETS ARE 6.09mm DIAMETER AND THE NYLON INSERT IS 5.50mm. THEY ARE NOT A DIRECT REPLACEMENT FOR EARLY MAINLINE LOCOMOTIVES . THE NYLON INSERT IS 4.5mm WIDE AND IS SQUARED TO FIT THE WHEEL.
DIMENSIONS - Including Flange 24.32mm Without Flange 22.68mm