2 1/8" diameter, (4) 4' straights, (4) 45 degree bends, (4) 90 degree bends, (4) 180 degree bends. All 304 s/s construction using only mil spec certified USA manufactured tubing. All ends OD sized for butt welding. Also available with ends ID sized for a slip fit as part number RB213X. 16 gage (.065) wall thickness tubing, CNC mandrel bent.