The Klasse shank colour referencing is now a standard feature across the Klasse range, making it easy to identify which type of needle to use. Shanks are also stamped with the needle size in both metric and imperial measurement.

Stretch needles are especially designed for two way stretch knits, lycra, power net, silk jersey, spandex and other highly elasticated synthetic fabrics. It works well on most machines and is the most commonly used needle for synthetic woven and natural fibres. The finer needles are generally used on lightweight fabrics and the larger sized needles for medium to heavyweight fabrics.