Snap together Sanding Block for SLA printer

There are a lot of sanding blocks hear,this block is a realy simple block that I have had for over 20 years that I have fallen in love with but I can not find them anyplace I thought it might have ben a Stanley but can not find this style anyplace.

looks like they are moving towards hook and loop,my ryobi is hook and loop and the loop side on the sander side is worn and no longer holds the sanding pads and there is no way to replace the loop side on the sander side,I have to buy a whole new sander.so right now I am not happy with hook and loop.although the sander has given me at least 10 years of happy sanding.

I have resized it to fit on my Elegoo Mars SLA printer,I think it should print ok on a FDM printer but it is more solid using a SLA Printer.