HI-Run® TUN5005 Heavy Duty Inner Tube, 20 x 8/10, Butyl RubberGreat for lawn and garden applications. Heavy duty, Butyl rubber. 20 x 8 10 Heavy Duty Butyl rubber For lawn and garden applications Full color box. WARNING: Consuming this product can expose you to chemicals including Lead Cadmium DEHP DINP which are known to the State of California to cause cancer and DBP BBP DEHP DIDP DNHP which are known to the State of California to cause birth defects. For more information go to www. P65Warnings. ca. gov