Twin Eagle Imports Left Hand Cobalt Drill Bit Set - 29 Piece (1/16"-1/2") - 135o Split Point

This premium 29-piece Left Hand Cobalt Drill Bit Set is engineered for tough drilling applications and is especially effective for removing broken studs, bolts, and fasteners. Designed with a left-hand cutting direction, these drills apply natural reverse torque as they cut-often backing out damaged fasteners during drilling, without needing an extractor.

Manufactured from high-speed steel enhanced with 5-8% cobalt, these drill bits deliver exceptional hardness, heat resistance, and wear life. They excel in demanding materials including red-hardened steel, stainless steel, and cast iron, while maintaining the durability and flexibility of traditional HSS-only with greatly enhanced performance characteristics.

A 135o full-ground split point ensures fast, accurate starting with reduced walking, friction, and heat build-up, delivering an economical, efficient cutting action.

Key Features

• Left-hand cut direction – ideal for drilling out broken studs and bolts; often removes the fastener while drilling.
• Can be used as standard drill bits where reverse-cutting is preferred.
• 5-8% cobalt alloy (M35 quality) for superior strength and performance in hard metals.
• Excellent heat resistance for extended tool life under high-temperature applications.
• 135o split-point tip for faster penetration, reduced wander, and improved accuracy.
• Fully ground construction for smooth cutting and long-lasting durability.

Set Includes (29 Sizes)

1/16”, 5/64”, 3/32”, 7/64”, 1/8”, 9/64”, 5/32”, 11/64”,
3/16”, 13/64”, 7/32”, 15/64”, 1/4”, 17/64”, 9/32”, 19/64”,
5/16”, 21/64”, 11/32”, 23/64”, 3/8”, 25/64”, 13/32”, 27/64”,
7/16”, 29/64”, 15/32”, 31/64”, 1/2”