2" x .120 x 6' CR40 Commercial Black Pipe for Chain Link Fences 3" x 3" Post and you would use this

and you would use this in tandem with two support brackets inside the vinyl to hold it firm to the vinyl post (4": 7WI-DSB-4X4

Featuring a compact

23" total height

x 6' Tall Line Post

047 wall thickness

2" x .120 x 6' CR40 Commercial Black Pipe for Chain Link Fences 3" x 3" Post and you would use thisThis is a 2" x . 120 x 6' CR40 Commercial Black Pipe for Chain Link Fence. 2" nominal O. D., 1 7 8" actual O. D. . 120 wall thickness Cold rolled 40 weight Galvanized, Black powder coated steel Made for commercial use Pipe must be cut down to lengths shorter than 8' or shorter to ship UPS, otherwise it would need to be shipped via a flatbed which is much more expensive. This pipe can be cut to customer specifications. Cut charges may apply.