Since tension rods are the first to rust, buying such expensive product is a good investment in a long term . I think Pearl was the first company which start producing stainles steel rods but only for snare drums. After 2015 dw Collectors all come with stainles steel rods. True Pitch 50 rods are great inovation - they offer really detailed tuning, hold tension and that buttery feel while tuning is really pleasant.