Hello everyone. I have been gifted bunch of meat grinding hardware but Im kinda lost about it. instead of all having a circle with holes like I saw years ago, most have some sorts of lid on it. when I remove it there are something inside but not sure what it for. See pictures. Could somebody explain to me what it is or point me to good reference about it.
There was also bunch of cones in the box too. they seem to be meant to grate but with what ?