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  • Precision Twist C115COMB High Speed Steel Jobber Length Drill Bit Set, Black Oxide Finish with Metal Case, 118 Degree Conventional Point, 115 piece, Combination, 1/16" 1/2" x 64ths, #60 to #1, A to Z
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Precision Twist C115COMB High Speed Steel Jobber Length Drill Bit Set, Black Oxide Finish with Metal Case, 118 Degree Conventional Point, 115 piece, Combination, 1/16" 1/2" x 64ths, #60 to #1, A to Z


List Price: $732.00
Price: $360.73 & FREE Shipping. Details
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Specifications for this item
Brand Name Precision Twist
Mfr Part # 99982
Material Type High Speed Steel
Finish Types Black Oxide
Pkg Qty 1
UPC 086071999825
Cutting Angle 118  Degrees
Cutting Direction right hand
Drill Point conventional
EAN 0086071999825
Flute Type Spiral
Mfg Series # C115COMB
Shank Type Round
Size 1/16" - 1/2" x 64ths
Style Name Jobber
System of Measurement Inch
UNSPSC Code 20121600

This Precision Twist C115COMB jobber length drill bit set contains 115 high... Read full product description



Product Features

  • Set of 115 jobber length drill bits includes inch sizes 1/16" through 1/2" in 1/64" increments, one each of wire gauge sizes #60 through #1, and one each of letter sizes A through Z
  • High-speed steel (HSS) provides hardness for wear resistance
  • Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material
  • 118-degree conventional point for a range of drilling applications
  • Drill bits conform to ANSI standards


Product Details

  • Shipping Weight: 8.6 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B001VXY82G
  • Item model number: 099982
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (1 customer review)
  • Amazon Best Sellers Rank: #80,549 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
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Product Description

This Precision Twist C115COMB jobber length drill bit set contains 115 high-speed steel drill bits, including inch sizes 1/16" through 1/2" in 1/64" increments, one each of wire gauge sizes #60 through #1, and one each of letter sizes A through Z, with a black oxide finish and a 118-degree conventional point for use in general-purpose applications on ferrous material. High-speed steel (HSS) provides hardness for wear resistance, and the black oxide finish acts as a lubricant to reduce wear while promoting chip and coolant flow. 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?

  • 115 drill bits, inch sizes 1/16" through 1/2" in 1/64" increments, one each of wire gauge sizes #60 through #1, and one each of letter sizes A through Z
  • Metal case

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Most Helpful Customer Reviews

3 of 3 people found the following review helpful By Amazon Customer on April 5, 2012
Verified Purchase
Amazon has really good prices on PTD. One thing I will warn people about though is that these are not made in the USA anymore. This set is made in Brazil. Regardless it still seems to be really good quality. No regrets buying it.
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