Name: Torsion Spring
Materials: 65Mn Spring Steel
WD: 1.4mm
Angle:60 Degrees , 90 Degrees , 120 Degrees , 180 Degrees
OD: 7mm , 8mm , 9mm , 10mm , 12mm , 14mm , 15mm , 18mm , 20mm
WIDE Used for: Widely used in doors, curtain, automobiles, bicycles, Steel devices, umbrella, kettle, , aircraft, antique tape recorder, repair toy, pliers, piano, scissors, electrical, etc