I have received it today and played with it for about 2 hours (straight forward coding since there are only 5 servos) myservo.write(120) seems to give me most "human" hand position when hand fully open. Pros : -very nice touch to have all the cables together -no rough edges -overall it presents well Cons : -very loosely built, i understand it mimics a hand, but there is loose and there is loooose -servo should have been with metal gears -servo should be of better quality and not buzz when hand is fully close or open -servo should not be "no name" -total cost of material (as of december 2018) estimated to be around 50 euros max I wanted a hand to mess about, and this was the most affordable i could find. It is going to serve me well, but it is at least 100 euros overpriced. There is no justification for a 230 euros price tag. Sometimes you have to try, sometimes you win, sometimes you don't