More than a little disappointed, advertised as aluminium, willing to spend more as I thought 'Great, they shouldn't rust!' But a magnet works on them...so not aluminium! No different really to the cheap Chinese ones, (which I recently fitted on my Father-in-laws Discovery 3) other than being ,double the cost, but still cheaper than 'Britpart'. M6 bolts coming through the steps to the brackets, originals are M8. I'd just as well have bought them for £99.00