10pcs Spring steel torsion springs tensioning torsion spring 4 different sizes of torsion springs

4 different sizes of torsion springs

（1）Material：stainless steel
Wire diameter 0.4mm
OD 4.5mm
Coil 6.5
the spring length 1 is about 13mm
the spring length 2 is about 9mm

（2）Material：steel
Wire diameter 0.8mm
OD 8.8mm
Coil 5.5
the spring length 1 is about 20mm
the spring length 2 is about 15mm

（3）Material：steel
Wire diameter 1.2mm
OD 11.5mm
Coil 4.5
the spring length 1 is about 29mm
the spring length 2 is about 7mm

（4）Material：steel
Wire diameter 1.2mm
OD 14mm
Coil 6
the spring length 1 is about 13mm
the spring length 2 is about 9mm