Draper / Silverline hex keys get fired straight in the bin. Tat.
Thing about these 2 brands is the random factor- some stuff is terrible, some is surprisingly good. So frinstance my Draper Expert p-handles sit happily alongside a bunch of old Brittool, Teng, Snapon and Bondhus stuff. But other bits I’ve had of theirs has been almost useless.
Same with Silverline- on a recommendation I got one of their brashing saws, the handle’s barely attached but it’s got an amazingly good blade on it. It looks like tat but it cuts as well as the Bahco it replaced, and cost £1.99.
So it’s kinda hard to recommend them but I wouldn’t rule them out either