Some months ago I bought some saw blades, where from I canít remember. I bought them as spares so I wouldnít run out . Well, today I broke the last no4 blade of my original set, so reached for this stash of blades. They are rubbish. They just wonít bite into the silver. As I said I donít know where I got them. They are in a green plastic 3 compartment wallet. What make do you experts recommend please?

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