The Machrus Swingan A-frame bracket makes building a swing set easier than ever. You'll be amazed by how quickly you are able to complete your project. Use it for your kids swings, a porch swing, a tire swing or any other swing you dream of. This is the strongest, safest and easiest system on the market today, you simply slide the wood into the brackets and screw the included lag bolts into the pre-drilled holes, no cutting or measuring necessary. Each one piece steel bracket features a rust-resistant green powder coating and pre-drilled holes for easy installation. The bracket is designed for use with 2 4x4 beams and 1 4x6 beam, you may want to take the bracket with you when purchasing your lumber to guarantee a proper fit. The bracket comes with 5/16 x 3-inch lag bolts with washers. The brackets are sold individually so that you can order as many as you need to build your own custom swing-set design just the way you dreamed it! with these brackets you will be building a structure that lasts, bringing ever-lasting satisfaction and enjoyment from your handy work. Let's go out and play!