Die Spring 5 Pack TM 20mm OD 30mm Spiral Stamping Medium Load Die Springs, Red

Description:
1. Rectangular section, closed-end design. Die springs are primarily used in die machinery equipment, for plastic injection 3D printer electric part.
2. The loading grade of die springs in various colors (from lightest load to extra heavy load): yellow, blue, red, green, brown.
3. Made of 65Mn material, the surface is red painted, not easy to rust, more durable.