Irwin 30520 Mechanics Length Left-Hand Cobalt Drill Bit Set, 5 Pieces

Irwin 30520 Mechanics Length Left-Hand Cobalt Drill Bit Set, 5/64" to 19/64", 5 Pieces

• Irwin 30520 is a left hand drill bit set with five mechanics length cobalt alloy high speed steel bits for drilling into broken or seized fasteners and tough metals. Built from M-42 8 percent cobalt HSS with a 135 degree split point and heavy duty spiral flutes to support easier starts and faster chip ejection.
• Features:
  • M-42 8 percent cobalt alloy high speed steel supports abrasive resistance in tough metals.
  • 135 degree split point helps reduce feed pressure for easier penetration without work hardening.
  • Heavy duty spiral flute design helps produce faster chip ejection during drilling.
  • Mechanics length design helps add strength and supports access in tighter work areas.
  • Ideal for use with screw extractors when removing broken fasteners, and the left hand cutting direction can help back fasteners out during drilling.
• Includes:
  • Left hand drill bit, 5/64 inch
  • Left hand drill bit, 7/64 inch
  • Left hand drill bit, 5/32 inch
  • Left hand drill bit, 1/4 inch
  • Left hand drill bit, 19/64 inch
• Specifications:
  • Manufacturer: Irwin
  • Part Number: 30520
  • Product Name: Left-Hand Mechanics Length Cobalt Alloy High Speed Steel Drill Bit Set
  • Alternate Part Numbers / Cross References: HN30520
  • Category: Drilling Accessories
  • Subcategory: Metal Drill Bits
  • Product Type / Function: Left hand mechanics length drill bit set for drilling and broken fastener removal support
  • Pieces: 5
  • Material: M-42 cobalt alloy high speed steel, 8 percent cobalt
  • Cutting Direction: Left hand
  • Point Style: Split point
  • Point Angle: 135 degree
  • Flute Type: Heavy duty spiral flute
  • Shank Type: Round
  • Included Sizes: 5/64 inch, 7/64 inch, 5/32 inch, 1/4 inch, 19/64 inch
  • System Compatibility / Application: Designed for drilling into broken fasteners and tough metals, and for use with screw extractors during fastener removal work
• The Left-Hand Mechanics Length Cobalt Alloy High Speed Steel Drill Bit Set can also be referred to as left hand drill bit set, cobalt left hand drill bits, mechanics length drill bit set, broken bolt drill bit set, and screw extractor drill bit set.

Irwin manufactures hand tools and drilling accessories used in construction, maintenance, and metalworking. The brand offers product lines for drilling, cutting, fastening, and gripping tools distributed through professional and industrial supply channels.

Q: What sizes are included in Irwin 30520?
A: The set includes five left hand drill bits in these sizes: 5/64 inch, 7/64 inch, 5/32 inch, 1/4 inch, and 19/64 inch.

Q: What does left hand cutting direction help with?
A: Left hand bits cut in reverse rotation, which can help loosen and back out some broken or seized fasteners while drilling, and they are commonly paired with screw extractors.

Q: What material are the drill bits made from?
A: They are constructed of M-42 cobalt alloy high speed steel with 8 percent cobalt.