The system comes in a really wertig acting Case. With the help of the description, it was found after a few timid attempts, that the connection between the needle point and rope can be easily manufactured. In the needle, a spring mechanism is well hidden, which yields to pressure by the introduced cable end and by turning it locks into place. For this you need no additional tools. Knitting with needles is pleasant, they are well in hand, the wool slides freely, the cable is flexible and thin, so everything super. Then why not full marks? Ironically, the chosen of my needle size had a needle in a defect: they simply could not be properly locked and slid apart again and again. Whether this would also have been the case with other tips, I did not try, but I will definitely be in the new set, I have just ordered, make. So Conclusion: great part, but control everything else possibly annoys you so only after many years, when one discovers that a needle tip that is now used for the first time, does not hold. The second order transition was successful. I've tested all the needles and all are okay. It was good that the first delivery was faulty, otherwise I would have certainly not done and so discovered damage certainly too late for a complaint. Praise for Amazon. Lightning-fast deliveries, instant credit of the defective product, better not go.