BS(CS) Antenna Mast for 40A (48.6φ) (BS CS Antenna Masts for 50cm and 60cm) High quality steel tubing with hot dipped galvanized for excellent weather resistance. Dimensions: Length 86.7 inches (2200 mm) x Diameter 1.9 inches (48.6 mm) x Thickness 0.09 inches (2.3 mm); Weight: 14.3 lbs (6.