伺服控制空收缩开关（空气UP / DOWN）L45xW12xH12mm
lo utilize en mi avion jet para reponer uno que se me habia roto
exelente calidad Muchas gracias hobby king !I bought 4 units. There are no problems, and no leaks.
But, I think the greese with the shaft is low quality. At only first time, the moving of the shaft stroke is not smooth.I am unfortunately forced to agree with the previous review, this may be an excellent price but there is nothing I have found that will stop it leaking. Secondly, the valve is not even set up correctly for air up and down operation, the lines vent through the barrel rather than the vent lines. I would not recommend this product to anyone.Sorry Hk I love you guys but this thing leaks like an open tape! Price is good but... If it leaks, doenst do anyone any good :)