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About product and suppliers:
        Alibaba.com offers 101,411 black gear products. About 3% of these are spur gears, 1% are pumps, and 1% are bevel gears. 

A wide variety of black gear options are available to you, such as steel, stainless steel, and plastic. You can also choose from wheel tractor, walking tractor, and combine harvester. As well as from garden tractor, oil, and air pump. And whether black gear is standard, or nonstandard. 

There are 101,411 black gear suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of black gear respectively. 

Black gear products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 19,974 with ISO9001, 10,158 with Other, and 2,534 with ISO/TS16949 certification.