"Cold-forged steel construction with steel ball bearings. 2 1/2in. x 3 3/4in. top plate with a bolt hole spacing of 1 3/4in. x 2 3/4in.. Capacity (lbs.): 150, Wheel Size (in.): 3 x 1 1/4, Bolt Hole Spacing: 1 3/4 x 2 3/4, Top Plate: 2 1/2 x 3 3/4, Wheel Type: Rigid, Material: Polyolefin, Quantity: 1 Riveted king pin"
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