Creative Hardware 10" Traditional Magnetic Decorative Garage Door Ring Set. Includes (2) 10" Door Ring or Knocker Set. It makes a great gift idea. No tools required for installation, just make sure the surface on your metal garage door is clean, open the package and install. Steel doors only. Customers with heart health concerns handling magnetic items should use care in handling magnetic products. Free Shipping! If ordering 4 or more sets of handles, please contact us BEFORE ORDERING for a discount code.