Cuplok Standards are made from 48.3mm   3.2mm steel tube and have every 500mm a unique fixed lower cup with a captive free top cup to allow horizontal components of the Cuplok system to connect.
 Size (Mtr.) Wt. (Kg)
 1.0  5.0
 1.3  6.6
 1.5  7.9
 1.8  9.1
 2.0  10.9
 2.3  11.6
 2.5  13.4
 2.8  14.3
 3.0  16.1