2-turn, 26mm diameter, 2.0mm thick, zinc plated door handle springs.  Please see additional photo for dimensions.  The circlips have an internal diameter of 13.8mm and are intended to fit a 15mm shaft with a 14.3mm groove machined into it.  This is the standard size used in the vast majority of door handles.  They are external circlips (so called because they fit to the outside of a shaft).  They should be removed and replaced using external circlip pliers.

We also offer a 2-turn, 27.5mm diameter, 1.8mm spring that has slightly more than 2 turns.  If your broken spring has more than 2 turns (or is larger than 26mm diameter) we would recommend the 2-turn, 27.5mm diameter, 1.8mm spring.  If the spring in this listing is used to replace a larger diameter spring (or a spring with more than 2 turns), this spring can become fully wound on the handle shaft before the handle is fully depressed. The difference in thickness between the 1.8mm spring and the 2.0mm spring is not significant.