Highlights:
- Material : Steel Bearings
- Size : 4-1/2 inch
- Designed for use with box rail
- Packed with connecting bolt and nuts, without end caps
- Durable one piece, precision formed steel
- Each hardened axle has 12 hardened and precision-ground alloy steel roller bearings
- Delrin seals keep out dirt while holding in long-life grease
- Safe working load 300 lb. per hanger
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