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1. Material JIS: SUP6; SUP7; SUP9; SUP9A; SUP10; SUP12; SUP12V; S60C. SAE: SAE9254; SAE9260; SAE6150; SAE9255; SAE1566; SAE1065; SAE52100.
DIN: 55Cr3; 60Si7; CK67; 60SiCr7; 50CrV4; 100Cr6.
2. Usage Spring; finished spring; shock absorber; clutch spring; brake shaft;
precision instruments; toys making and so on.
3. Size Diamteter: 3mm--20mm
