This 28mm diameter x 27.5mm width main bar roller (MB529TSW3) is a direct replacement part for HGV and trailer curtain-siding systems. Supplied by LoadMonkey, it's a straightforward like-for-like fit for worn or flattened rollers without needing to replace the whole rail assembly.
A quick fix for a curtain that's sticking or juddering as it runs along the rail.
