National Hardware?N193-714 Flexible Hangers with Offset Bolt, Zinc, 2-Pack

Designed for use on wood-frame doors with round rail. Packed with bolts for attaching door straps. Slot in top of door strap allows lateral and vertical adjustment. Flexible trunnion design resists door damage. Delrin?wheels are quiet and smooth rolling. Precision-ground and hardened steel roller bearings, axles and sleeves provide longer life and easier operation. Zinc plated Designed for use on wood-frame doors with round rail Packed with bolts for attaching door straps Slot in top of door strap allows lateral and vertical adjustment Flexible trunnion design resists door damage Delrin?wheels are quiet and smooth rolling Precision-ground and hardened steel roller bearings, axles and sleeves provide longer life and easier operation Safe Working Load – 300 lb. per hanger 2 pack.