
Made of plastic with a thin layer of stainless steel over the plastic. I've found that glue is even more difficult to work with than grout, I've been working with tiles for many years. This particular style has twisted ends, increasing the difficulty. No one can fit a 12" x 12" tile or whatever perfectly and with this adhesive there is no adjustment, if you don't get it right you can't remove it without ruining it. Like I said I like the look so I'll continue; but on some I used chalk as glue.

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