En1a bright bar, Steel Bright Bar or Cold Drawn Bar are steel bars manufactured by passing hot rolled steel bars through dies in a cold process.SIZES WE MAKE IN BRIGHT BARS ARE: Rounds: 18mm to 63.5mm Bright Bar Hexagons – 22mm to 36mm Bright Crane Rails – 40mm x 30mm to 70mm x 40mm Squares – 20mm to 50.8mm