Brand: Winsoon; Material: Stainless steel; Surface: Frosted Black, Water Proof, Rust Proof; The post flange: 3.6" x 3.5" x 3", gate flange is 3.6" x 3.5" x 1.5"; fit a 3/4" to 1" gap between the gate frame and the gate post. Easy to install: With the simple installation manual; Use the included 1 2/5" metal screws to install the hinge on the vinyl fence, don’t need to pre-drill holes. If You Use it on a Wood Gate, You Will Need to Buy Wood Screws Separately Adjustable Hinges: Stainless steel Gate Spring; Easy to adjust the tightness: Put the small rod inside the hole around the top of the hinge and turn it to adjust the tightness of the hinge. Self Closing Door Hinges Package included: (2) hinges + (28) vinyl installation screws (not for wood) + (1) swing adjuster tool 5 YEAR FACTORY WARRANTY- The product comes with 5 year factory warranty. If you are not satisfied with this product, we can provide you the USA return address. And if there is any part missed or defective during shipping, please let us know, we will send replacement at no charge for the missing or defect parts at the first time.