100 gray recycling cards with DIN long micro-perforations

 <p><b>gray, perforated blank cards</b></p> <p>100 folding cards<br> Landscape or portrait format 21 x 10.5 cm (open 21 x 21 cm)<br> Gray cardboard approx. 320 gsm<br> one card weighs a good 13 grams</p> <p>The front is perforated and you can remove 3 x 6 squares. <br> Gray cardboard is also known as gray cardboard, which is what you know from the back of a writing pad.</p>