Cuplock horizontals include ledgers and transoms, are also made of 40 mm NB tubes, and are so robust that they require zero maintenance. Horizontal tubes have forged blade ends that allows simple and quick assembly. The blade ends of the horizontals fit into the cup of the vertical tube, ensuring a strong assembly. Normal horizontals can also serve as guardrailings in a staircase tower. Ms round pipes is used of 48.00 mm OD and 3 mm Thickness. Minimum projection of blades avoids damages in handling and uniform dimension makes the cup joints rigid.