Drill America DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set for Professionals

The Drill America DWD29J-CO-PC Qualtech jobber length drill bit set features 29 cobalt steel drill bits, precision-crafted in inch sizes ranging from 1/16" to 1/2" in 1/64" increments. Each bit boasts a gold oxide finish that enhances durability and provides lubrication, optimizing wear resistance and functionality.

A standout feature of these drill bits is the self-centering 135-degree split point, designed to penetrate hard materials without the need for a pilot hole. This innovative point design generates smaller chips, thereby significantly reducing the risk of clogging when drilling. Compared to the traditional 118-degree point, the 135-degree design ensures cleaner and more efficient drilling.

Cobalt steel stands out for its ability to extend tool life, particularly when working with tough materials, surpassing the performance of high-speed steel drill bits. This material maintains its hardness and toughness even under high-temperature drilling conditions, making it a reliable choice for professionals.

The set is housed in a practical plastic index case, complete with labeled compartments for easy identification and organization. Each drill bit conforms to the American National Standards Institute (ANSI) specifications, ensuring that they meet high industry standards.

Drill bits are essential cutting tools utilized for creating holes in various materials with machines such as handheld portable drills, machining centers, and lathes. They come in numerous types and lengths, with the twist drill bit being the most common variant. Characterized by a round, twisted shaft, the twist drill bit typically features two cutting edges and flutes. The helical twist of the flutes effectively lifts chips away from the cutting edges, while also facilitating coolant flow during operations.

Among the different lengths available, jobber length twist drill bits strike a balance between length and reach, suitable for a wide array of materials and applications. For instances requiring less deflection, mechanic's length twist drill bits, slightly shorter than their jobber counterparts, are ideal. On the other hand, short length drill bits, often referred to as stub or screw-machine length bits, are the shortest and stiffest, which minimizes the probability of deflection or breakage during use.

Reduced shank drill bits, commonly known as Silver and Deming drill bits, possess a shank that is narrower than the bit's shaft, allowing them to be compatible with 1/2" or 3/4" drill chucks for creating larger holes. In contrast, long length twist drill bits, also known as taper length drill bits, extend beyond jobber length, permitting drilling of deeper holes and reaching challenging areas. For even greater reach or deeper drilling needs, extra long twist drill bits, referred to as extension bits, come into play.

Founded in 1927 and headquartered in Miami, FL, Drill America specializes in manufacturing a broad array of cutting tools. Their diverse product lineup includes drill bits, taps, dies, counterbores, countersinks, end mills, and reamers, catering to the needs of various applications and industries. The Drill America DWD29J-CO-PC Qualtech jobber length drill bit set embodies their commitment to quality and performance, making it an essential addition for any toolkit.

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