Note：When you release the spring tension with Hex Wrench, you’d better wear glove or put a towel under your palm in order to protect your hand not to be hurt.<br>If you want to replace the old hinges, please pay attention to whether the hole position corresponds to the old hinges.<br><br> Specification<br> Size: L*W*H 4*4*0.1″<br> Thickness：2.5mm<br> Quantity Per Set: 3 pcs<br> Corner:5/8" Radius Corner<br> Package including: 26pcs* Screws，1pcs*Allen Wrench 4pcs*Dustproof Screws<br><br> Installation Instruction：<br> 1.Unfold the hinge and adjust the angle you can install easily. <br> 2.Insert the wrench and force push, then the self-closing hinge can keep the angle you need. <br> 3.Mark all screw holes and size with mark pen.<br> 4.Drill screw holes and install them.<br> 5.Adjust the spring tension to keep your door smoothy as you want and install all dustproof screws to ensure the normal work of elasticity.