It arrived quickly and at the earliest date predicted by Australia Post. Quite an achievement these days. I installed it and did a full day of work with it . No real instructions were included but you will figure it out. It works really well. It isn't for heavy typers as it would cause vibration. My mouse did drop 4 times during the day as there is no raised edge on the platform. I think I will line the edge with paracord giving some kind of edge. I installed it on an IKEA Markus chair.
All good. Very happy.