This Acrylic Mirror Strip Installation Kit conceals black edges on mirrors. It includes four 48 in. acrylic mirror strips and four corner plates. They are easy to cut by scoring at desired length with a razor knife and then snapping off at the score line with hands or pliers. One package will repair mirrors up to 50 in. by 50 in. It also comes with double-faced adhesive tape squares. Must use with Liquid Nails Adhesive Glue For Small Projects (LN-700) Size: 3.5 In. Color: Clear Mirror.