I bought two sets of these tires , one for my hand truck which evertyime I try to use it has at least one flat tire, requiring several minutes and additional work to use the hand truck,. The second set is for my gasoline tanker which I use to fill my boat with gas it hold 28 gallons and again usually has a flat tire when I went to use it requiring additional effort to complete my task. no MORE bought the tires shown mounted in about 5 minutes and end of problem forever I will buy one more set just to keep in my warehouse for future use, smartest tire for this type of vehicle ever, they all should have these tires standard