Arnold 6-Inch Steel Wheel with Ribbed Tread - 50lb. Load-Rating 6" x 1.50" steel wheel for use on small carts 1/2" diameter centered hub and 1-3/4" hub length Ribbed tread wheels 1/2" ball bearing 50 lb. load rating Replacement steel wheel For use on walk-behind mowers of correct size; Replaces model 650-B Features ribbed tread for traction 1/2" centered hub diameter and 1-3/4" hub length 1/2" ball bearing, steel wheel measures 7" x 1.5", 50 lb. load rating