A step forward in the evolution of the traditional spiral spring with several new enhanced features: the support belt is now fitted with hooks and the spring is firmly gripped to ensure that it does not shift its position due to the effects of pressure and vibration.
The base is also punched with holes to ensure perfect extraction. This means that ironing performance is enhanced and the external coating lasts longer.
The spring is made of galvanised steel and its base has a 0.9mm cross section and a width of 16mm. Available in heights of 10 and 12mm.