G'day Dave,

These mounting brackets are compatible with M8 bolts, which have a diameter of 8mm.
I'm not familiar with the Rola Channel bolts, but if they're M8 you will be fine.

G'day Brendan,

The mounting brackets themselves are the way to go, but you'll need to use channel bolts to actually attach them to the roof racks.

G'day Daniel,

The Hard Korr panels these are designed for are 17mm thick...the bracket themselves only have a rise of 22mm.
I reckon your 330W panels will be thicker than this, but if they're 22mm or thinner, you should be ok.

We don't but your local Jaycar should have something that will work for you, they have a huge range of solar mounting hardware.

G'day Wayne,

Hard Korr has these brackets to be compatible with most roof racks and platforms, however they don't have specific information regarding exactly which racks they will fit without modifications. They are supplied with brace plates, as well as bolts, nuts and washers, so should fit most setups

G'day Marcel,

These brackets have been designed to be compatible with most roof racks and platforms, however Hard Korr doesn't have specified information regarding exactly which racks they will fit without modifications. They are supplied with brace plates, as well as bolts, nuts and washers, so should fit most set ups.