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Code: ZR1017
The spiral flute has the advantage of optimizing the chip flow. Even long, non-breaking chips are removed easily. This process protects the cutting edges and reduces built-up edges. The cone shape allows the drills to be easily removed from the drilled hole. Each step drill is individually packed in a plastic box. Step drills are available in many sizes with various steps and come in both metric and imperial / fractional sizes.
