Size 15x15cm,1set=16pcs,Important: surface is covered by protective transparent film, please peel it of using nail or needle, then it can show mirror effect.,NEW 2015 Fashion New 1set=16pcs Reflective Mosaic Mirror Like Decorative Wall Stickers Self-adhesive Tiles Decal Home Room Decoration RT554,Note: 1.Transition: 1cm=10mm=0.39inch