Patented drawn spring steel wire type DH up to Ø 1.9mm Patented drawn spring steel wire type SH from Ø 1.9mm
The springs have a right-hand coil (clockwise) For springs with wire diameters smaller than 0.5 mm the end coils are "closed". Springs with a wire diameter greater than 0.5 mm have end coils that are "closed and ground". All springs that demonstrate setting properties are preset. All springs have been given thermal postreatment and stress relief.