Adjustable Uprights With Slip-lock Collar

                                             Thickness: 51.5*2mm 45*2mm 38*2mm

             Two Stop-adustable upright Size                          Three Stop-adustable upright Size
           3' - 5'(0.91-1.52m) adjustable upright                    5' - 11'(1.52-3.41m) adjustable upright   
           5' - 8'(1.52-2.44m) adjustable upright                    6' - 14'(1.83-4.27m) adjustable upright   
           6' - 10'(1.83-3.05m) adjustable upright                  7' - 17'(2.13-5.27m) adjustable upright
           7' - 12' (2.13-3.66m) adjustable upright                 8' - 20'(2.44-6.2m) adjustable upright 
           8' - 14'(2.44-4.27m) adjustable upright                  9' - 23'(2.79-7.13m) adjustable upright
           9' - 16' (2.74-4.88m) adjustable upright