Changing brakes, what is the silver thin plate on back of old brake pad?

Hi, i changing my old 1992 paseo brakes, but I noticed that on some of my old front wheel pads, there is a flimsy silver colored thin metal attached to the brake, what is that, my new brakes I just bought from toyota didnt come with that.
Changing brakes, what is the silver thin plate on back of old brake pad?
If it is on the back side of the pad, between the pad and caliper it is an anti-squeal shim. Most manufactures use them but not always. Helps cut down on brake noise. You might be able to buy the shims seperately if you want or you can get products like De Squeal to put on the back of the pads before installing.
Changing brakes, what is the silver thin plate on back of old brake pad?
I believe what you are describing is the brake shim. This is used to reduce brake noise while driving at slower speeds. If when you apply the shims %26amp; pads they dont fit try applying the pads and the shim afterwards.
As the other two said , you can reuse them if there not damaged . But your new pads might come with thin anti-noise pads ( stuck on the back of the pads ) , if they do have the pads , don't use both . Only use one or the other only .