No, they are not A2. They are a No. 10 Wide blade. Just ask for wide blades for the Harmony. You might have to get them from a clipper specialist as most normal tack shops probably wont sell them. Clippersharp do fast mail order if you need them ASAP.
Thanks for that - I was going to get them from local saddlery but I think they were the A2 blades anyway?! I've ordered them from Robinsons and they were £10 cheaper!