Hangs Pictures, Mirrors & Heavier Wall Decor Easily, Safely & Securely With No Damage To Walls Interlocking Aircraft-grade Aluminum Brackets Provide Tremendous Strength & Are Simple To Use 3 Bracket Installs On Frame Back With Included Screws & Foam-backed, Non-marring Bracket Installs On Wall Using Level & Nails The aircraft grade aluminum brackets will not corrode and can be used indoors or outdoors Offset 1/4" (7 mm.) 6" size holds up to 50 lbs The brackets are installed using fine nails and includes a foam backing to minimize wall damage