Norseman Ultra Dex Type 240-UB 135 Degree Split Point Magnum Super Premium Jobber 29-Piece Drill Set

Features:

• Special Hi-Molybdenum tool steel.
• 135 split point for fast penetration and accurate starting without a center punch.
• Precision ground point, body, clearance and drill diameter for the ultimate in accuracy and performance.
• Body and clearance are gold surface treated for maximum lubricity.
• Drills are heat treated at 2185 F and then nitro-carburize finished at 950 F to be measurably harder than high speed steel.
• Space aged nitro-carburized steel withstands substantially higher drilling temperatures while maintaining sharpness.
• Recommended for use in work hardening grades of stainless steel and other hard metal drilling applications.
• Sizes smaller than #52 have non-split points.