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About product and suppliers:
        Alibaba.com offers 1,109 bit drill extension products. About 24% of these are drill bit, 5% are power tool accessories, and 5% are screwdriver. 

A wide variety of bit drill extension options are available to you, such as hex, phillips, and slotted. You can also choose from magnetic screwdriver, twist drill bit, and screwdriver set. As well as from high carbon steel, carbon steel, and high speed steel. And whether bit drill extension is wood drilling, metal drilling, or masonry drilling. 

There are 1,109 bit drill extension suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of bit drill extension respectively. 

Bit drill extension products are most popular in South America, Mid East, and North America. 

You can ensure product safety by selecting from certified suppliers, including 217 with ISO9001, 94 with Other, and 38 with ISO14001 certification.