Hi Pete! The discs are just punched out of sheet steel and are approx. .020" thick.. I believe they are just polished steel, and not stainless, although some show a hint of plating, but then again, it could just be age and/or varnish... The discs are pressed in, (interference fit) and the only way I've seen them come out is when the wood rim around the disc is worn to a point to where the tension is released on the disc.. and they then just fall out... I believe it is strictly an appearance item, although their presence would retard wear somewhat, right at the grasping points in the bottom... all of the other bottom dimensions are identical! Hope this helps answer some of your questions! best to you, til...lat'r...GT <img border="0" alt="[jumper]" title="" src="graemlins/jumper.gif" />
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