Hey machinists and workshop folks – need a reliable R8 collet for your milling machine? This Heyiarbeit precision collet is built to get the job done. It's made from high-quality 65Mn spring steel that's been hardened to a tough HRC 55, so it's durable and built to last through plenty of use. The clamping diameter is 20mm (about 0.79 inches), and it's precision ground to a tight tolerance of 0.0005 inches (0.013mm) for accurate, secure tool holding. It has the standard 7/16-20UNF drawbar thread, so it should fit right into your R8 spindle taper. The design includes a positioning slot, which makes installing and aligning the collet quicker and easier. It's a single collet (sold individually), so it's perfect if you need a specific size or are replacing a worn-out one. It's built for a large clamping force and a wide range, and the surface grinding ensures everything stays accurate. Whether you're doing precise milling work or just need a solid collet for your shop, this one is a trustworthy choice. Just make sure your machine's spindle has an R8 taper, and you're good to go.