Material: A2 (304) Stainless Steel    

Wire diameter: 0.5mm

Outer diameter: 3 mm - 6mm

Length: 15mm - 300 mm

Spring Size: Wire Diameter x Outside Diameter x Length

Dimensions:

e.g. 0.5 x 5 x 30 means wire diameter 0.5mm, spring outer diameter 5mm, total length 30mm