Here is another one. This is from Stockroom Supply, in Wainfleet, Ontario, Canada. they ship to the US.

The picture below is from their webpage, (http://www.stockroomsupply.ca/shop/flex5x5.html) which happens to be about the 5-hole version of this "hook and loop flex conversion". they have other versions in other sizes and with other hole patterns, or with no holes. Five-inch size sells for about $15.

If you buy one, you can be the first to put up a review of it on their website !

In the absence of any user coments on this item, here is the blurb from their webpage:

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An awesome addition to your hook and loop conversion system, this flex adapter has the capability to convert any disc sander into an extremely durable cushioned sander that will contour around any round over, chair leg, table edge or anything with shape and not leave flat spots. With the use of our hook and loop conversion discs, or an existing sander with a hook and loop system, you can make use of this remarkable product. Basically, it's a double density foam pad with hooks on one side and loops on the other. Works great on disc sanders for shaping and moulding wood for intarsia and other projects.

Original Flex is approx. 1/2" thick.

Always in Stock!
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The price on the webpage is listed in Canadian Dollars, but I'm not sure if they charge a different price for US dollars. The catalog I have from them is a year old, and it says prices are the same in either currency. You might want to call or e-mail them to get a current price before you order.

According to the specs, this pad would be 1/8" thicker than the pad from lee Valley (1/2" thick as opposed to 3/8" thick.

Hope this helps

PGJ