The NP-8-SA-OS allows you to bore the carriage (up to 8.8500), determine the size, and contact Nowak with your requirements. Nowak will custom manufacture an NP-8-SA-OS to your specifications. To complement the oversize revolving head Nowak offers a unique service. For machines that qualify we bore the carriage oversize and install the revolving head. The nature of the patented Nowak boring process assures exact alignment of the ability and repeatability in production.