Drill America 3-Piece Quick Change Cobalt Drill Set with Hex Shank for COHEX Series

The Drill America COHEX Series is a lineup of high-quality drill bits designed to handle tough, high-tensile strength materials. Crafted from heat-resistant cobalt and ground to a heavy-duty 135-degree split point, these drill bits offer exceptional performance and precision.

One of the key features of the COHEX Series is the common flute and overall length, which allows for minimal adjustment during tool changes. This consistency ensures seamless integration with a wide range of power tools and drilling applications. Additionally, the precision grinding process ensures a high degree of concentricity between the shank and body diameter, further enhancing the accuracy and stability of the drill bits.

Aside from their suitability for drilling in tough materials, the COHEX Series also excels in low and medium tensile strength applications. The 1/4-inch hex shank can be used with quick-change impact drivers, providing versatility and convenience for users.

The length between the chucking slot on the shank and the end of the shank is a standard 3/8 inches, ensuring compatibility with a wide range of drilling equipment. Cobalt steel, the material used in the COHEX Series, is similar to high-speed steel but with a higher cobalt content, which improves performance when cutting harder metals such as stainless steel or nickel alloys.

One of the standout features of the COHEX Series is the 135-degree split point tip. Compared to a conventional 118-degree tip, these drill bits are less likely to "walk" or wander during the drilling process, thanks to the self-centering design. This feature, combined with the precision grinding, ensures accurate and controlled drilling, even in challenging materials.

The COHEX Series also features a gold oxide surface treatment, which is a thinner oxide coating compared to the more commonly used black oxide. This distinctive finish helps to identify the cobalt steel composition, but it does not significantly impact the performance of the drill bits, which is similar to that of uncoated tools.

The Drill America COHEX Series is available in a 3-piece set, offering sizes of 1/8, 3/16, and 1/4 inches. This range of sizes allows users to tackle a variety of drilling tasks, from small-scale precision work to larger-scale applications, all with the same high-quality and reliable performance.

In summary, the Drill America COHEX Series is a versatile and durable lineup of drill bits that excel in both tough, high-tensile strength materials and more common drilling tasks. With their precision engineering, self-centering design, and compatibility with a range of power tools, these drill bits are an excellent choice for professionals and DIY enthusiasts alike.

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