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About product and suppliers:
        Alibaba.com offers 2,397 square drill bit products. About 58% of these are drill bit, 11% are mining machinery parts, and 7% are milling cutter. 

A wide variety of square drill bit options are available to you, such as tungsten carbide, carbon steel, and diamond. You can also choose from core drill bit, twist drill bit, and center drill bit. As well as from metal drilling, wood drilling, and masonry drilling. And whether square drill bit is free samples, or paid samples. 

There are 2,394 square drill bit suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Japan, and Taiwan, which supply 94%, 3%, and 1% of square drill bit respectively. 

Square drill bit products are most popular in Domestic Market, Eastern Europe, and North America. 

You can ensure product safety by selecting from certified suppliers, including 634 with ISO9001, 238 with Other, and 62 with ISO14001 certification.