No malfunction, if you didn't guess by the use of the millimetre measurement first I actually live in Australia. This little child's trike is an early strap/flat steel strike made by Cyclops. Front wheel is 12 inch and rear wheels are 7 inch solid rubber. The handle bars are solid bars of steel.
To give a little perspective, if you look at the picture the previous owner has used a length of ordinary garden hose as replacement grips. That's how small the bars are.....
Thanks
Anthony