12-mil vinyl, backed with genuine 3M Adhesive. 3 numbers per pack. Number font is a custom-modified, impact style, font. Used by top Supercross and Motocross teams - ME Energy fits KAW, Geico fits HON, and Star fits YAM. Available in 4 and 6 sizes, specifically sized for motorcycle applications for correct fitment. Extremely tough, durable, and able to withstand pressure washing without peeling up!.