Jayne's Winter Scenes Collection A4 Square Groovi Plate Set3x 210mm x 210mm Groovi Plates Groovi Plate (GP) Intricate and clever designs have been laser etched with precision into top quality acrylic plates, thereby allowing you to get in the groove with a specifically made to measure embossing tool, and effortlessly follow the design path through parchment. The end result is quick, crisp and clean. For best results from the Groovi Plates and Groovi Plate Mate, use the 0. 8mm 1. 3mm embossing tool.