Great value and they do genuinely feel like they will be hard to puncture, they are an odd mix of soft and hard simultaneously and not like normal rubber. They are a little odd in the way they go on but just use the spacers provided and they fitted by 60" Husler no problem and continue to work well, the main thing is that they are damn good value and arrived quickly, about 3 days from date of order. Good work Vevor team, thank you.