Home Crafting Tools That Shape Metal Watch our 42CrMo4 steel press brake tools come to life with exacting CNC precision. Get Quote About Roka Roka Tooling crafts precision press brake tooling with superior 42CrMo4 steel and exact CNC grinding for perfect bends every time. Learn More Precision Tools Crafted from 42CrMo4 steel with ±0.02mm CNC grinding accuracy.