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Take your precision machining to the next level with Chicago-Latrobe's TiN coated screw machine drill bits for steel, stainless steel, and aluminum. These high-quality drill bits feature a 31/64-inch size for ultimate accuracy and versatility in various machining applications. The bits' spiral flutes evacuate chips efficiently while preventing heat buildup and wear on the cutting edges. With their fractional inch measurement system, you can count on precise drilling every time. Additionally, the product's High-Speed Steel construction ensures long-lasting performance and durability to maximize your return on investment. Experience superior quality and craftsmanship with Chicago-Latrobe's screw machine drill bits!