The Axminster Woodturning Discovery SK100 chuck is designed to maximise work holding options. It is a chuck to enhance your woodturning, making it easier, accurate and more enjoyable. The package includes an Axminster Woodturning Discovery SK100 Chuck and enclosure, Dovetail Jaws – Type C, Faceplate Ring, Screw Chuck, Chuck Key and Interchangeable Backplate. The SK100 chucks are all precision engineered and made entirely in Axminster, UK, to ensure they deliver CNC accurate results. The SK100 chuck features super-slim 100mm diameter, CNC machined, fully enclosed stainless-steel body and interchangeable backplate for effective corrosion resistance. These chucks won’t rust, either from condensation in a cold workshop or the sap from green wood. Stainless steel body is machined to exact tolerances for a perfect fit of both jaws and lathe spindle. The interchangeable backplate allows you to keep your chuck body when upgrading your lathe, saving you time and money; simply choose the suitable backplate for your new lathe thread and attach to the chuck body. Upon first purchase of your chuck, choose the correct thread for your lathe. The Discovery SK100 is fully compatible with all previous accessory jaws and dovetail jaws. The key has a square end for a positive location in the pinion and easy operation. Available in sizes 1” x 8 tpi, 1.1/4” x 8 tpi, 3/4” x 16 tpi and M33 x 3.5mm. The M33 x 3.5mm thread is a universal thread, that combines the standard M33 x 3.5mm thread, allows you to add an ASR Locking Ring as well as grub screws to turn in reverse, all in one thread. Suitable for standard M33 x 3.5mm threads and lathes with an ASR spindle for running in reverse. If want to run in reverse, you require a lathe with an M33 x 3.5mm EURO standard (ASR) spindle and the 109370 ASR Locking Ring (sold separately). All made entirely in our manufacturing facility, in Axminster, UK using CNC technology for accurate results. To ensure the chuck is assembled safely, secure the chuck front to the chuck backplate (threaded insert) using the 4 x M6 x 25mm screws and ensure they are tightened to 12NM (Newton-Metres). To secure the chuck to the SK100 Enclosure, use the 4 x M4 x 40mm screws and ensure they are tightened to 3.5NM. Please ensure the 2 x M5 Grub Screws are tightened to 2NM. Please ensure the 2 x M5 Grub Screws are tightened to 2NM.