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        Alibaba.com offers 843 expansion bits products. About 2% of these are drill bit, 1% are mining machinery parts, and 1% are dental drill & accessories. 

A wide variety of expansion bits options are available to you, such as high manganese steel, carbide. You can also choose from construction works , manufacturing plant, and energy & mining. As well as from oem. And whether expansion bits is core drill bit, twist drill bit, or center drill bit. 

There are 843 expansion bits suppliers, mainly located in Asia. The top supplying country or region is China, which supply 100% of expansion bits respectively. 

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