Constant force spring

can supply a set of spring used in window

used in window set.

Aboved specification are avaliable

                   0.30*12.5*889mm

                   0.30*10*889mm

                   0.38*19*1016mm

                   0.35*19*1016mm

                   0.30*19*1016mm

Dimensions: 0.25*19*1016mm