Load Spiral Stamping Compression Die Spring Outer. Features: Made of High-quality Spring Steel, Precision Machining, Good Elasticity, High Rigidity and Durability. Blue Spring (light Load): Can Be Compressed to 52% of the Total Length The Surface is Reinforced and Has a Strong Structure and Long Service Life. The Shape is Rectangular, and the Whole is Subjected to Strong Pressure Treatment, Which is Not Easy to Be Deformed or Broken. Specification: DIY Supplies: Metalworking Material: STEEL Style: Compression Spring Is_customized: Yes Usage: Industrial Model Number: Outer Dia X Inner Dia X Length Load Type: Compression Inner Diameter: 10mm. We are an international based seller that will ship your order from abroad, please at least a minimum 14 working days for delivery right now due to the ongoing delays in shipments globally.