The 600 series is McLeod Racings is the ultimate big power street disc. Lined with ceramic/ceramic disc material. Made with a steel backed facing and a marcel drive plate along with a 6 spring 6 rivet hub the 600 series disc is a very robust disc to meet your high performance needs. The 600 series is offered in several different diameters and inputshaft splines to meet whatever your application requires. Perfect for the weekend grudge racer or big power street slayer. With the McLeod Racing 600 series disc you know your putting the power to the ground.