Specification of Spring :

 Thickness (wire diameter) : 3.2 mm 
 O.D (outer diameter of coil) : 17.7 mm 
 Overall Free Length :  125 mm
 Coil Length : 61 mm
 Number of coil: 18
Hook ends are offset : 90 degrees
Zinc plated carbon spring steel
Note : The dimensions are + - 0.1 mm 

Fits various machines but not all , Please check measurements before purchase .

Please be sure from the photo and information given that this is the part you require .

If you Doubt or want information about the product before buying you can ask questions through eBay message .