John Deere 50-lb Plastic-Shell Rear Wheel Weight BM17976 (Single Weight)***This kit contains 1(one) 50 lb weight. Please order quantity 2(two) to put weights on both sides.***One 50-lb plastic-shell rear wheel weight may be installed on each rear wheel to provide extra traction and stability. The outer shell is molded of tough polyethylene plastic filled with a heavy granular material that contains a high iron percentage. A bonding substance is added to hold the material together so that it will remain intact, even if the shell is damaged. Multiple stacking is not recommended. Overall width of the tractor will be increased by approximately 2 in. (51 mm) when weights are installed. For 23x10.5-12 and 24x12-12 tires in narrow position only. Weights are packaged one per carton, with necessary hardware for installation on a wheel. This is a OEM John Deere Part. Thanks for looking!