A variety of specifications are available for the puzzle double gray board paper to cater to different application scenarios. Common sizes include various thicknesses (such as 0.5mm, 1.0mm, 1.5mm, 2.0mm, etc.) and grammage (like 250g, 500g, 700g, 1000g, etc.). Additionally, there are different dimensions and shapes to choose from to meet various puzzle or packaging requirements.