Polyethylene 50x60 hull

Polyethylene shell pass. Male diameter thread 40 mm (inside) / 49 mm (outside).Correlation of connecting dimensions in mm and inch: - diameter 33 mm (inside) / 42 mm (outside) = 1 ¼ inch - diameter 40 mm (inside) / 49 mm (outside) = 1 ½ inch - diameter 50 mm (inside) / 60 mm (outside) = 2 inches