MillMirror Disposable Mouth Mirrors - Purple 100/Bg. Offers two-in-one convenience. Non-slip handle features a 35mm scale built right in, making it ideal for endodontics or for measuring X-rays. Unbreakable front-surface size 4 acrylic mirror has an easy-lift protective film. Individually wrapped in take-home zip closure pouches. Package of 100 mirrors