The K9 POWER riding lawn or zero turn mower tires are a set of two black rubber tires designed for lawn mowers. With a height of 8.5 inches and a diameter of 18 inches, these tires are sturdy and durable for outdoor use. Made in China, this pair of tires is a reliable and essential part for maintaining your yard and garden. Tires have never been on ground brand new. I order a set for my zero turn mower a year ago and they sent me 2 sets. I do not need this set of tires.