The 1/4X3/16 Ctsk 6F HS 90° is a high-speed steel countersink made in the USA, designed for precision machining. With a 90-degree angle, it is perfect for creating smooth, conical holes in various materials, ensuring a perfect fit for screws and fasteners. The dimensions of 1/4 inch by 3/16 inch make it versatile for different applications. Crafted from high-speed steel, it provides excellent durability and cutting performance, making it suitable for both professional and DIY projects. This countersink is essential for achieving clean finishes.