"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. Outer Bearing Size in. 1 1/4 I.D., Overall Length in. 93 1/2, Seal Size in. 2 1/8 I.D., Weight Capacity lbs. 5,200, Axle Tube Type Square, Brakes Included No, Inner Bearing Size in. 1 3/4 I.D., Track Length in. 87 1/2, Frame Width in. 72, Start Angle 10 Below, Cambered Yes, Hubs Included Yes, Bracket Type Standard 1-in. above tube. Measures 78 7/8in. from outside of brake flange to outside of brake flange"