SESAM II 44451 flap support, the unique flap support with high closing and support force, can be used both left and right. Industrial product without outer packaging / assembly instructions New Components: spring made of galvanised steel with 27 turns. Body (lower and upper part) made of weather-resistant, extremely durable, recyclable and coated plastic. Separate pre-assembly makes it very easy to install time-saving and cost-saving: first part 1 and 2 are mounted individually (without obstructive rod) according to the template. This allows for a much more flexible workflow. Then part 3 (rod) is hung in part 1 and then locked into part 2 by closing the flap or door. This final step is also possible with furniture that is already pre-assembled. Reduce the spring force: reduce the distance a-b or distance a-c, increase the spring force: increase the distance a-b or distance a-c, reduce without screws/mounting materials. Box contents: as shown in the photo