Our tinted 4D gel number plates are made from a rigid acrylic plastic & backed with a vinyl reflective backing the same as your standard NCT Car plates with GEL 3D LETTERS 60mm high embossed on top. MAX 9 digits per plate including spaces. Standard size is 20.5″ w x 4.4″ h as per your standard NCT Plate Size. The plates are waterproof.