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China 38~43mm diameter rock drillign chisel bit with low price
Sinoran can offer the best quality rock drilling bits to the customers all over the world.Diameters of drilling bits from 28mm to 45mm, tapered drilling steel with Hex.22mm and Hex.25mm are in our product scope. Our tapered chisel bits are made of high quality raw material, after special heat treatment, these bits can be used in very tough working site.