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Ultra Bor Super Premium
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Type 280-UB
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1/2" reduced shank silver & deming
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3-Flats on shank
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Heavy-duty
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135° split point for fast penetration and accurate starting without a center punch
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Sizes larger than 1" diameter have 118° split point
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Special Hi-Molybdenum tool steel
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Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance
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Body and clearance are gold surface treated for maximum lubricity
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Space age nitro-carburized steel withstands higher drilling temperatures while maintaining sharpness
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Recommended for use in work hardening grades of stainless steel and other hard metal drilling applications
