The FS2 Fixed Height Floor Stanchions consist of a 6"x6"x1/4" laser cut base plate with four 3/8" mounting holes, 2" square 14 gauge heavy wall steel tubing, and a 4" wide collar set at 42"(from stanchion to top of barre) above the floor surface to accept the barre. These accept a 1.5" bar. The floor stanchions have a beautiful powder coated texture matte black finish. The Collar accepts 1.5" diameter barre material.