Rose 52 mm Ø.
The sprung handles are equipped with a built-in return spring that helps the return spring of the lockcase to keep the handle in a horizontal position. This feature is by definition not included in the unsprung handles.
The two handle halves are linked by an exchangeable through-going square spindle and screws. The square spindle and the screws are available in various lengths for various door thicknesses.

Material: brass.
Surface finish: black