Faceting head and mast are made of investment cast aluminium/magnesium alloys that are machined and fitted to extremely close tolerances. All spindles and bar stock are precision-turned stainless steel for maximum durability and lasting beauty. The faster running Mark IV will speed up pre-forming and occasional cabochon work. Speed range of 0 to 600 RPM! Just plug it in and it’s ready to run. The dependable, fast, and easy faceting head is accurate to 1/10 of a degree. This machine will do EVERYTHING competitive makes will do except it will cut faster, last longer, and save you hundreds even thousands of Rands!