A 10 piece jigsaw blade set by Bosch. Cheapest I could find elsewhere for a comparible set was £10.
They are this price all the time in Wilko apparently.
Fits Black and Decker, Bosch, Makita, Metabo, Skil and other makes according to the packet.
Blades for wood, laminate, plastic and pipes, aluminuim and other metals.
NOTE: Isn't available online, I ticked that box but it doesn't seem to show it.
£8 for equivalent at screwfix plus postage.