Machine: Contour-BB Cylinder Head: Demonstration Application: Valve Seat - HP beryllium copper Valve Seat Diameter: 1496 "(38.00 mm), beryllium copper, cutting cycle time: 0 minutes 50.6 seconds (http://lh3.ggpht.com/_veNt4wCNwxE/SwjT5QPBigI/AAAAAAAAIPE/EJXYhIhdHSw/s72/HP_beryllium_copper.jpg)