Disston 135 High Speed Steel Split Point Drill Bit 5/16" x 4-1/2"

"MASTER MECHANIC" HIGH SPEED STEEL DRILL BIT

• 5/16" x 4-1/2" 
• M7
• Provide fast penetration
• Improves chip flow
• High speed steel, black oxide drill bit
• 135 split point, jobber length, straight shank
• 135 point angle with 4 cutting edges which eliminate walking
• Black oxide tempering treatment reduces frictional resistance
• For occasional use in stainless steel & other hard metals.
• Recommended for wood, plastic, wallboard, plywood & soft metals, aluminum, brass & bronze
• Carded.

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