-   Cores: stainless steel with titanium-nitrate core surface finish -   Locking rings: with air-assisted preform ejection (blow out) -   Neck rings: stainless steel, water cooled -   Cavities: highly polished and chromed surfaces -   Gate inserts: stainless steel with highly polished surfaces Perfectly balanced hotrunners ensure uniform melt flow and pressure in all cavities. The design of the melt channels minimizes shear and pressure loss, and provides a uniform flow to all cavities. Optimized heat distribution results in consistent AA levels across all cavities.