29 Piece M35 Cobalt Drill Bit Set in Round Case

The Drill America DWD29J-CO-PC Qualtech jobber length drill bit set features 29 cobalt steel drill bits with a gold oxide finish in inch sizes ranging from 1/16" to 1/2" with 1/64" increments. With a self-centering 135-degree split point, these drill bits penetrate hard materials without the need for a pilot hole and produce smaller chips that help reduce clogging, which is a significant improvement compared to a 118-degree point.

The cobalt steel construction of the drill bits provides extended tool life, especially when compared to high-speed steel drill bits. This material also maintains the tool's toughness and hardness even in high drilling temperatures. The gold oxide finish not only acts as a lubricant but also provides wear resistance, ensuring durability and longevity. The round shank of the drill bits is compatible with most drill chucks for easy use.

The set comes in a plastic index case with compartments labeled for easy identification and organization. These drill bits conform to American National Standards Institute (ANSI) standards, guaranteeing quality and reliability. Drill bits are essential cutting tools used to create holes in various materials using machines like handheld portable drills, machining centers, and lathes.

Twist drill bits are the most common type and come in different lengths and types to accommodate a wide range of materials and applications. Jobber length twist drill bits offer a good compromise in length and reach for versatility. Mechanic's length twist drill bits are shorter than jobber length and less prone to deflection during drilling. Short length twist drill bits are the shortest and stiffest option, helping to reduce the chance of deflection or breakage.

Reduced shank drill bits, also known as Silver and Deming drill bits, have a smaller shank diameter than the shaft, allowing for drilling larger holes. Long length twist drill bits provide deeper holes and longer reach, while extra long twist drill bits offer even greater reach or the ability to drill deeper holes.

Drill America, established in 1927 and based in Miami, FL, manufactures a wide range of cutting tools including drill bits, taps, dies, counterbores, countersinks, end mills, and reamers. Choose this set of 29 jobber length drill bits for quality, durability, and precision drilling needs that meet ANSI specifications.

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