100mm. Highly visible Anti-Slip Tape that solves slip issues and helps to warn of an impending hazard. The alternating black and yellow tiger stripes help to ensure it is seen. Features: Self Adhesive; Anti-Slip; Durable; Effective; Easy to Apply; Great for Stair Nosings; Long Length Roll for Various Uses; Highly Visible Black/Yellow Hazard Stripes; Wide Width to Cover Larger Areas.