Machine: Contour-BB Cylinder Head: Demonstration Application: Valve Seat - Classic beryllium copper, beryllium copper Valve Seat Diameter: 1496 "(38.00 mm), cutting cycle time: 0 minutes 41.2 seconds (http://lh5.ggpht.com/_veNt4wCNwxE/SwnIHrwpZcI/AAAAAAAAIPU/UfNfkKRbHBo/s72/Classic_beryllium_copper.jpg)