Comparison : Item # QIG-14-1, Connecting Adapter, 14/20, Isolating
Item # QIG-14-2, Connecting Adapter, 24/40, Isolating
Item # QIG-14-3, Connecting Adapter, 14/20, Isolating, Support Arm
Item # QIG-14-4, Connecting Adapter, 24/40, Isolating, Support Arm