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The Drill America DWD29J-CO-PC Qualtech jobber length drill bit set is a comprehensive collection of 29 cobalt steel drill bits with a gold oxide finish, designed to handle a wide range of drilling tasks. The set covers inch sizes from 1/16" to 1/2", with 1/64" increments, allowing users to select the perfect bit for the job.
One of the standout features of these drill bits is the self-centering 135-degree split point, which allows for efficient penetration into hard materials without the need for a pilot hole. This design produces smaller chips, reducing the risk of clogging compared to the more common 118-degree point.
Cobalt steel, used in the construction of these drill bits, provides extended tool life compared to traditional high-speed steel. This increased durability is especially beneficial when drilling through tough materials, as the bits maintain their toughness and hardness even in high-temperature drilling conditions.
The gold oxide finish serves a dual purpose, acting as a lubricant to facilitate smooth operation and providing enhanced wear resistance. This combination of features helps to extend the overall lifespan of the drill bits, ensuring consistent performance over time.
The set comes housed in a practical plastic index case, with labeled compartments for easy identification and organization. This storage solution keeps the drill bits safe and accessible, making it a convenient choice for workshop or jobsite use.
It's worth noting that these drill bits conform to the American National Standards Institute (ANSI) standards, ensuring quality and reliability in accordance with industry-recognized specifications.
Drill bits are essential tools for a wide range of applications, from handheld portable drills to advanced machining centers and lathes. The most common type, the twist drill bit, features a round, twisted shaft with two cutting edges and flutes. The helical twist of the flutes helps to remove chips and allow for effective coolant delivery to the cutting edges.
Jobber length twist drill bits, like those included in this set, offer a versatile compromise between length and reach, making them suitable for a broad range of materials and applications. Shorter mechanic's length and stubby screw-machine length bits are less prone to deflection, while longer taper length and extra-long extension bits provide greater reach and depth capabilities.
Drill America, a company founded in 1927 and headquartered in Miami, FL, is a respected manufacturer of cutting tools, including drill bits, taps, dies, counterbores, countersinks, end mills, and reamers. The Drill America DWD29J-CO-PC Qualtech jobber length drill bit set is a testament to the company's commitment to quality and innovation in the cutting tools industry.
product information:
Attribute | Value | ||||
---|---|---|---|---|---|
is_discontinued_by_manufacturer | No | ||||
package_dimensions | 8.54 x 5.12 x 4.13 inches; 2.2 Pounds | ||||
item_model_number | DWD29J-CO-PC | ||||
date_first_available | October 22, 2013 | ||||
manufacturer | Drill America | ||||
best_sellers_rank | #60,451 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #243 in Screwdriver Bit Sets | ||||
customer_reviews |
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