Use the hydraulic jacks to open the lid and work perfectly to hold the lid. some items require two hands to store and it is extremely difficult when only one hand is needed to hold the door. You can easily lift the lid by yourself and hold it while storing or taking something from the cabinet. Use gas strut for large toy boxes to prevent the lid from falling and to trap people's hands, make the lids open and close very easily. Due to the strong connection between the two arms, the soft close will work perfectly to prevent it from slamming and protect children's safety. It slows down the descent enough so as not to crush little fingers. Furniture jack is suitable for lids or doors weighing between 17 lbs and 25 lbs. extended length: 10.6 inches (270 mm); The pressure support of each spring can reach 100N (10kg) Please note: not suitable for steel or heavy tool holders. Simple to install cupboard door hinge. Using the included mounting brackets, position the spacer 20% of the door width from the hinge. If you plan to use it on a new project, take measurements at full extension before installation so you don't drill random holes in your mounting surface and struggle with the extension angle. This kitchen door hinges comes with all main components. Easy to assemble, and if they fit into the brackets of the old ones, detach the old ones and insert the new ones in their place. Use the screwdriver to pry the clip, detach the hydraulic rod then insert the new ones in place.