Vortex 5C Metric Lathe Collet – Round Bore – 3mm is a soft 5C boring collet designed to be bored to a precise size, depth, taper, or shape to suit your component. It works with a 5C lathe collet chuck to create a custom bore that matches your part, enabling repeatable results in everyday machining workflows. With a 13–15 micron runout, these collets provide tight, dependable bore accuracy. Pins are used to keep the collet open during the boring process, making setup clear and straightforward. Once bored, the collet can be re-bored multiple times to accommodate larger parts, so be sure to keep the pins for repeated use. Low runout for precise boring: 13–15 micron runout delivers consistent bore accuracy across multiple parts, helping you hit tight tolerances with confidence. Bore-to-size design with reboring: Soft collets are bored to a specific size, depth, taper, or shape and can be re-bored several times to fit progressively larger components. Open-bore setup with reusable pins: Pins hold the collet open during boring in a 5C lathe chuck, enabling quick setups and repeated use for ongoing projects. This collet empowers you to tailor bores to exact requirements, streamline changing parts, and extend tool life by reusing bored collets—all while maintaining dependable performance in standard 5C lathe operations.