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  • Precision Twist C15L10 Left Hand (Reverse) Flute High Speed Steel Jobber Length Drill Bit Set, Uncoated (Bright) Finish, 118 Degree Conventional Point, Inch, 15 piece, 1/16" to 1/2" x 32nds
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Precision Twist C15L10 Left Hand (Reverse) Flute High Speed Steel Jobber Length Drill Bit Set, Uncoated (Bright) Finish, 118 Degree Conventional Point, Inch, 15 piece, 1/16" to 1/2" x 32nds


List Price: $332.00
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Specifications for this item
Brand Name Precision Twist
Part Number 99955
Material Type High-Speed Steel
Finish Types Uncoated (Bright)
Number of Items 1
UPC 086071999559
Chamfer Type Taper
Cutting Angle 118  Degrees
Cutting Direction Right-Hand
Drill Point conventional
EAN 0086071999559
Flute Type Spiral
Manufacturer Series Number C15L10
Shank Type Round
Size 1/16" -1/2" x 32nds
Style Name Jobber
System of Measurement Inch
UNSPSC Code 20121600

This Precision Twist C15L10 left-hand (reverse) jobber length drill bit set... Read full product description


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Product Features

  • Set of 15 jobber length drill bits includes inch sizes 1/16" through 1/2" in 1/32" increments
  • Left-hand helix for counterclockwise drilling and broken screw removal
  • High-speed steel (HSS) provides hardness for wear resistance, and the uncoated (bright) finish can be used on a range of materials, especially soft metals
  • 118-degree conventional point for a range of drilling applications
  • Drill bits conform to ANSI standards

Product Details

Product Description

This Precision Twist C15L10 left-hand (reverse) jobber length drill bit set contains 15 high-speed steel drill bits, including inch sizes 1/16" through 1/2" in 1/32" increments, with an uncoated (bright) finish and a 118-degree conventional point for use on a range of materials, especially soft metals. The counterclockwise spin of the left-hand helix can be used for removing broken screws from a threaded hole or drilling in reverse direction. High-speed steel (HSS) provides hardness for wear resistance, and the uncoated (bright) finish provides an untreated surface. These jobber length drill bits have a drilling depth up to four times their diameter. The round shank accommodates most drill chucks. The set comes in a metal index case with labeled compartments for identification and organization. Drill bits conform to American National Standards Institute (ANSI) standards.

Drill bits are cutting tools used to make holes in a range of materials using machines such as handheld portable drills, machining centers, and lathes. Drill bits come in a variety of lengths and types, the most common of which is the twist drill bit. The round, twisted shaft of the twist drill bit typically has two cutting edges and flutes. The helical twist of the flutes brings chips up and away from the cutting edges and allows for coolant to reach the cutting edges. Jobber length twist drill bits, the most common length of twist drill bit, offer a good compromise of length and reach to work with the widest range of materials and applications. Mechanic's length twist drill bits (also called maintenance length) are a little shorter than jobber length and less prone to deflection when drilling. Short length twist drill bits (also called stub or screw-machine length) are the shortest and stiffest twist drill bits, helping to reduce the chance of deflection or breakage when drilling. Reduced shank drill bits (also called Silver and Deming drill bits) have a shank that is smaller in diameter than its shaft, permitting drilling machines with either a 1/2" or 3/4" drill chuck to create large holes. Long length twist drill bits (also called taper length) are a little longer than jobber length, allowing for deeper holes and longer reach. Extra long twist drill bits (also called extension) are longer than long length twist drill bits for greater reach or for drilling deeper holes.

Precision Dormer manufactures cutting tools under the brands Precision Twist, Dormer, and Union Butterfield. The company, headquartered in Crystal Lake, IL, meets International Organization for Standardization (ISO) standards 9001 and 14000.

What’s in the Box?

  • 15 drill bits, inch sizes 1/16" through 1/2" in 1/32" increments
  • Metal case


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