Calling all machinists, woodworkers, and CNC enthusiasts! This Qjaiune ER32 Collet Set is here to make your precision work a whole lot easier. You get six essential sizes in one pack: 1/8\, 1/4\, 3/8\, 1/2\, 5/8\, and 3/4\ – covering most of the common tool shank diameters you'll need. Each collet is machined from high-quality spring steel, which means they're tough, resistant to heat and corrosion, and have fantastic elasticity for a super secure grip on your tools. The run-out tolerance is super tight (0.0006\), ensuring your milling, drilling, boring, or engraving work is accurate and clean. They're perfect for use with CNC routers, milling machines, lathes, and pretty much any tool holder that uses an ER32 chuck system. The set comes neatly packaged, ready to go to work. We stand behind the quality, so if you're not completely satisfied, just let us know. Ditch the mismatched, worn-out collets and get yourself a reliable, complete set that won't let you down mid-project.