The Gelli Arts Perfect Placement Tool will help you create perfectly aligned layered prints! -Print layer on top of layer - and have them all aligned. -Create prints in the center of your paper. - Works with 3x5", 5x7", 6x6" and 8x10" gel printing plates. 100% acrylic, with long lasting etched markings. This acrylic is recyclable, non-toxic and is Made in USA