National Hardware N245-308 Box Rail Hangers, 3-1/8 Inch

Highlights:

• Material : Steel Bearings
• Size : 3-1/8 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