Hex Shank HSS Step Drills
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...Drills for drilling cylindrical holes in solid material up to a thickness of 1/8". * Burr-free and vibration-free drilling. * The tapered cutting edges of the next drill step can be used for simultaneous deburring or chamfering of the finished bore at the same time. * Drilling perfectly round holes in steel, brass, copper, aluminum, wood and plastic. * Drills up to 1/2" holes sizes with one bit......
ZEC INDUSTRY CO.,LTD
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