TONIC STUDIOS-Tempered Glass Cutting Mat. Use this 13x13in glass cutting mat with your Tonic and other scrapbook; card making and paper craft cutting tools. This mat will protect your surfaces and give you a clean durable surface to cut on. This mat features an overall 12x12in grid with a 4-1/4x5-1/2in; 8-1/2x5-1/2in grids and a 6x6in diagram for ever angle from 0 to 90 in 5 degree increments. Imported.