all kinds of bicycle tyre, 12" to 28", type is based on order we have 100 kinds of bicycle spare parts,if you want our products,please send me an e-mail or contact me though the trade manager,then I could send you our catalogue.And we have more than 100 types of pedais,chainwheels&crank,chain covers,cycle holders,front and rear axles,back seatsand bicycle baskets...etc. bicycle parts