Contact me first with the width of your hinge(or a photo) so I can send you the right version. These hinges came in 3 different widths. This is for one replacement heavy duty plastic hinge half for the special half metal-half plastic garage door hinges found on many older garage doors. This is a direct replacement part. This does not require hours of modifying your door or drilling new holes in the steel. No long down time is involved or dealing with a rigged up door that binds because the hinges are mismatched. The problem with your original factory hinge is the plastic half was only designed for ease of assembly by the door installer. It was not designed to last. This heavy duty polymer version is 10x stronger and also allows the two halves to separate cleanly in most cases under extreme vertical stress without breaking. This allows you to fix the problem and then rejoin the two halves. You will receive one hinge half. The original required a high pressure forced fit just to connect the plastic half to the metal half of the hinge. Installing this new piece does not require any such force. As for preparation while your part is en route to you there is no need to remove the metal half of your hinge. Leave it in place on your door. Once your item ships I will message you instructions on how to install this. For the purposes of keeping intellectual property out of the public eye for now the piece that ships will look different from the photos shown. Replacing a hinge is 60x cheaper than replacing your whole garage door($2k average) or making lots of new holes in the steel trying to modify your door to make it work differently. Long projects like that never come out quite right. This heavy duty replacement is "one and done." As with all garage doors do not allow people or pets to stand under an open garage door and do not park under an open garage door. After manufacturing costs +'s seller fees + PayPal's transaction fees + postal shipping fees this is just barely worth it because of all the middle men. Otherwise a direct sale would only cost about $20. If it helps people avoid a major home expense and also maintain what is otherwise a perfectly good garage door then it's a win/win. Your garage door should be serviceable not disposable. Free shipping and free returns. If there's a problem let me know and I'll work with you. My work keeps me away often so to be safe, handling time to get this shipped out is 1 week. SHIPPING ADDRESS: I can only send your item to the registered shipping address at time of payment.