Heavy Duty Porch Swing Spring, Hammock, Hanging Chair Spring, Pack Of 2 There isn't any instruction in the package because using this product is quiet simple. This product is a swing extension spring, which can be connected with porch swing chain or other carabiner even strong rope, to play or just to rest. Choosing our product will be one of your excellent options. Specifications: Package includes: 2 swing springs Product thickness: 7mm Product Dimensions: 8.26 inches1.57 inches1.57 inches Package Dimensions: Product weight: 3.15 lbs(2 pack) Package weight: 3.2 lbs(2 pack) Product Features QUALITY GUARANTEE?Our porch swing spring, was made of high quality metal, which will be more springy and durable and it don't damage easily. Each end of the swing spring has a rubber tip preventing you from scratching your fingers or hands when you are installing. Per package is a swing spring set, including 2 hammock chair springs which are 8.26 inches in length, 1.57 inches in both width and height. The thickness of the spring(without a rubber tip) is 7 mm. Pleas have a careful look at the picture on the left. WARM TIPS?Weight limit is about 600 lbs. The spring's lifespan will be shortened when it links too heavy things for a long time although it is a heavy duty swing spring. So, we suggest that do not hang some overweight objects with it frequently. Please make sure the weight capacity and dimension of our swing spring are suitable for your demands before you order our porch swing spring. Our hanging chair spring is a perfect hardware accessory for swing indoors or outdoors on porch swings, hanging chairs and hammocks and so on. It works in a smooth way and can add your enjoyment. SATISFATION GUARANTEE?To ensure you're satisfied with these porch swing springs, we offer a 30 DAYS MONEY BACK GUARANTEE. If our swing spring damaged when you receive, we'll send you a new one at no cost. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!