SILVER AND DEMING MAGNUM PREMIUM 1/2” SHANK DRILLS
• Special HI-MOLYBDENUM tool steel is heat treated at 2185°F and then nitrocarburize
finished at 950°F to be measurably HARDER THAN HIGH SPEED STEEL.
• 135° split point for fast penetration and ACCURATE STARTING without center punch.
(sizes larger than 3/4” have 118° split point)
• Body and clearance are gold surface treated for MAXIMUM LUBRICITY.
• FLATS ON SHANK give positive chuck-grip and virtually eliminate drill/chuck
slippage.
• Recommended for use in work hardening grades of stainless steel and other hard
metal drill applications.
• SET INCLUDES 1 EACH : 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1”
• SHIPPED IN AN 8 PIECE CASE
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