| 摘要 |
The present invention relates to a washer and, particularly, to a washer for performing smooth rotation in a state of a pair of washers which are not separated from each other. The washer is equipped with a penetration hole in the center, and is formed with washer units having first and second direction differences having different sizes on upper and lower surfaces. The pair of washers enables the first direction difference equipped in each of the two washer units to be interlinked. A coupling unit inserted inside the penetration hole equipped in the pair of washer units is coupled to smoothly rotate the washer unit. |
