Hi, I'm sell my backup arm:            3A ARM w/ LUNA SPRINGs and all UPGRADES    The Titanium springs have a load capacity of 6-32kg (13-72lbs) .  The arm has slight signs of wear, but is in very good overall condition, fully functional, cleaned and lubricated.   Located in Berlin, Germany. Can be tested on site.  Serial: #303   Price 4.900 EUR + shipping.   Please message me for any question, Chris