PRICES MAY VARY. [Tape Free]: No tape, adhesive, glue. The backing has self-adhesive. Brakki bullnose carpet stair treads can be firmly stuck to the stair floor like a sticker, and its back has a non-slip function to prevent the stair mats from moving when walking. Our stair treads protect your stairs from everyday scratches and wear. Don't worry about it damaging your hardwood floor, there will be no residue after installation. [Edging Stair Protectors]: Our non slip stair treads is…