Hey, if you're working with a lathe, milling machine, grinder, or any other workshop equipment that needs a handwheel or crank, these revolving handles are a simple but super useful upgrade. They come in a pack of two, each with an M8 thread (that's 8mm diameter, about 0.31 inches) so they fit standard handwheel spindles. The cool part is the internal bearing – it lets the handle itself spin freely while the shaft turns. That means you can get a really firm, comfortable grip without your hand getting twisted up. They're made from solid chrome-plated metal, so they're durable and resist rust. Each one is about 9.8cm long (roughly 3.9 inches) with a diameter of 2.3cm (0.9 inches). They've got a nice silver finish and have some weight to them (the whole pack is 390g), which makes them feel substantial. Just make sure the thread size matches your machine before you order. They're a no-brainer for smoother, more comfortable operation on your workshop projects.