Hangers: Set of 2 commercial swing hangers for porch swings and swing beds Commercial grade ABS plastic hanger with a galvanized steel eyehook core Mounting screws for wood installation only included Overall dimensions: 2W x 5.25D x 4.25H inches. .75 inch eye opening. Weight limit is 1500 lbs per hanger. 3000 lbs total. Hole size: 1/2" Recommended pilot hole: 5/16" Wood screws provided: 1/2" x 3" Springs: Set of 2 comfort springs. Zinc plated and clear-coated for added weather resistance. Creates even suspension and unparalleled swing comfort Each spring attaches to the support in the ceiling/stand and the top link of the hanging chains of your porch swing Springs can easily be added to existing and new porch swings. Attachment takes 2 minutes. Each spring measures 1.75D x 8.5L inches Weight limit is 600 lbs per spring. 1200 lbs total.