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CYRO/NITRO SERIESCORNWELL%u00ae DRILL BITSCTD29CNSSizes: 1/16%u201d to 1/2%u201d by 64thsThe ideal solution for drilling through extremely hard materials such as those used in structural frames and heavy equipmentUtilizing a unique Cryogenic heat treatment, each drill bit is placed in a chamber and taken down to a temperature of -300%u00b0 F where they remain for 48 hours, and then slowly brought back to room temperature. This process results in a less brittle and stronger drill bit.Excels in drilling high tensile materials such as 3% Boron, military-grade armor plating, 400, 450 & 500 steel found in today%u2019s automobiles, trucks, trailers, construction, and military equipment.Jobber LengthNitrogen added to surface to further increase the hardness & wear resistance 135%u00b0 Split Point Tip Design
