Product has been accepted spitzenmäßig properly and. A note for then-deserved 5 star would be an instruction manual as di caps are removed without the worry what to destroy. Everything had been dismantled to recognize this ... At first sit the caps so firmly that they fear this break. Ultimately, to solve these rotated counterclockwise and accordingly reversed to fix. After 1- 3 times removed and refitted, it is then also possible for 5 years to do this single-handedly. Top extension. ..