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About product and suppliers:
        Alibaba.com offers 2,050 custom size inner tubes products. About 13% of these are automotive rubber, 3% are motorcycle tires, and 1% are tool parts. 

A wide variety of custom size inner tubes options are available to you, such as inner tube, tire casing. You can also choose from free samples, paid samples. 

There are 2,054 custom size inner tubes suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and South Korea, which supply 99%, 1%, and 1% of custom size inner tubes respectively. 

Custom size inner tubes products are most popular in North America, Mid East, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 539 with ISO9001, 124 with Other, and 36 with ISO14001 certification.