Alright DIYers and machinists, these uxcell HSS steel rods are seriously handy to have around! You get 20 pieces of high-speed steel rods that measure 1.7mm in diameter and 150mm long, with a hardness of HRC 61-63 and a polished finish. These things are perfect for making gear shafts, motor shafts, support shafts, or any miniature axles you might need. The surface is smooth and they're easy to shape and cut to whatever size you need. They work great for processing copper, aluminum, and unhardened steel items - think milling cutters, sharp knives, gravers, or even craft projects. Just a heads up - you'll want to add some oil during storage to prevent rust since they're not coated. Seriously, whether you're working on lathes, boring machines, or just doing some DIY crafts, these rods are super versatile and the quality is much better than you'd expect for the price. Cut them, shape them, use them as replacements - they're one of those workshop essentials you'll find uses for everywhere!