[ Product name ] Electric type (HOP600)
Features:
Aluminium alloy crust, screw pole inside;
Technics: height adjustment via an electric motor;
Press a button to adjust height;
One special arm of force; 
Weight bearing for single arm: 8KG, suitable for
  1pc 19 LCD monitor or smallersingle arm;
Oxidation & frosting technics, color amendable;
 
Specification

standard color             grey
exterior technics          frosting oxidation
pole height                60cm
height range for arm       22-58cm
max bearing for arm        10cm
Qty of arms                1pc
Lcd suitable               19'
weight                     3.5kg
 
Accessory
standard configuration:LCD Screw,hexagon spanner,AC adaptor
optional configuration:single arm,color amendable