Delta Power Equipment Corporation BC30T2 30-Inch T-Square Fence and Rail System Item may ship in more than one box and may arrive separately One piece 14 gage 2 by 3" rectangular steel guide tube, mounted to on 1/4" section angle iron rail. Fence body constructed of 14 gage welded steel. Release position, for easy positioning Fence securely clamps to both front tube only to insure perfectly parallelism to the blade front to back.