Rubber-cushioned inside steel bar absorbs road shock and provides torque action that improves load handling, reduces shock transfer and trailer sway 1-pc. forged spindle/arm. Eliminates springs, shackles and U-bolts. Designed to maintain accurate toe and camber. Each rubber torsion trailer axle comes cambered. Inner Bearing Size in. 1 I.D., Brakes Included No, Start Angle 30 Below, Hubs Included No, Bracket Type Standard 1-in. above tube, Cambered Yes, Seal Size in. 1 1/4 I.D., Track Length in. 69, Overall Length in. 73 3/4, Weight Capacity lbs. 2,000, Frame Width in. 57, Axle Tube Type Square, Outer Bearing Size in. 1 I.D.