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About product and suppliers:
        Alibaba.com offers 34 30mm locking caster products. About 64% of these are furniture casters, 32% are material handling equipment parts. 

A wide variety of 30mm locking caster options are available to you, such as free samples. 

There are 34 30mm locking caster suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 30mm locking caster respectively. 

0mm locking caster products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 14 with ISO9001, 1 with ISO13485, and 1 with Other certification.