Packaging Included: 12pcs acrylic positioner sheets, abundant quantity and different sizes can effectively meet your various crafting needs. Various Size: L-shaped: 10x10cm/3.9x3.9inch, 2.6mm thick, side width: 3.7mm~30mm, 12 different widths, please refer to the picture for details Reliable to Use: These positioning pieces tools are made of high quality acrylic material, sturdy and durable structure, not easy to break or deform, can be stored and used for a long time. Useful Functions: These card corners helpers are suitable for precise positioning and layering, which can make lining up between card layers easier without the need to frequently use a ruler to mark out the space; Wide Usage: With the positioning tools you can turn your creative ideas into reality, you can easily make greeting cards, invitation cards and so on.