Hole Diameter(Outer Diameter): 12mm/0.47"; Inner Diameter (tolerance +0.5mm): 6mm/0.24"; Free Length: 20mm/0.79" (+/- 2mm); Max Compression Rate: 40%; Maximum Load: 206N Color: Blue; Load Type: Light Load; Material: Spring Steel; Surface Treatment: Spray Paint Rectangular section, closed-end design. Die springs are primarily used in die machinery equipment, for plastic injection 3D printer electric part. Made of spring steel material, the surface is blue painted, not easy to rust, and more durable. Package Content: 10pcs x Compression Die Spring 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 spring steel material, the surface is blue painted, not easy to rust, more durable.

Specification:
Product Name: Compression Die Spring
Load Type: Light Load
Color: Blue
Hole Diameter(Outer Diameter): 12mm/0.47"
Inner Diameter (tolerance +0.5mm): 6mm/0.24"
Free Length: 20mm/0.79" (+/- 2mm)
Max Compression Rate: 40%
Maximum Load: 206N
Material: Spring Steel
Surface Treatment: Spray Paint
Package Content: 10pcs x Compression Die Spring