1/4 copper access valve for refrigeration parts

Refrigeration parts for refrigerator,air conditioner,and auto air conditioner industries. 
Tube can be soft or hard,tube length, 
Different specifications available:1/4,3/16,3/8. 
tube longth can be according to customer's requirements: 
40mm,50mm,60mm,70mm,80mm,90mm,100mm,120mm....... 
with check or without check,with head part or without head part