Mounted Ball Bearing, Number of Bolts: 4, Series: RCJ, Bore Dia.: 1-11/16", Bearing Type: Ball, Bearing Material: Steel, Housing Material: Cast Iron, Locking Type: Locking Collar, Mounting Hole Center: 4-1/8", Overall Height: 2-5/16", Overall Width: 5-3/8", Overall Length: 5-3/8", Bolt Hole Size: 33/64", Insert: Ball Bearing, Dynamic Load Capacity: 8,150 lb., Static Load Capacity: 4,500 lb., Temp. Range: -65 Degrees to 200 Degrees F, Finish: Powder Coat, Color: Gray