PS#2 U-Head Prop Series: Outer tube: 57 X 2.5mm (Q235) Inner tube: 48 x 3.2mm (Q235) Surface treatment: Electroplated, Powder Coated, Painted, Hot dip galvanized (For choices) PS#2-1001: Adjustable distance: 1850mm~3050mm Adjustable holes: 13 holes Unit weight: 18.7 kgs PS#2-1002: Adjustable distance: 2050mm~3550mm Adjustable holes: 16 holes Unit weight: 20.2 kgs PS#2-1003: Adjustable distance: 2450mm~4150mm Adjustable holes: 18 holes Unit weight: 23.1 kgs PS#2-1004: Adjustable distance: 2950mm~5050mm Adjustable holes: 22 holes Unit weight: 26.4 kgs