3D Printer Die Spring, 1 Pack 40mm OD 80mm Long Spiral Stamping Compression Green

Product Name: Compression Die Spring Load Type: Heavy Load Color: Green Hole Diameter(Outer Diameter): 40mm/1.57" Inner Diameter (tolerance +0.5mm): 20.5mm/0.81" Free Length: 80mm/3.15" Max Compression Rate: 24% Material: 65Mn Package Content:1pcs x Compression Die Spring