The handles of a sefer torah are known as atsey chayim (sing. ets chayim) the trees of life. This is taken from the verse in 'It (the Torah) is a tree of life to all who grasp it The handle itself breaks into various parts: The shaft (containing a number of holes by which the parchment is affixed with giddin. The discs, some of which can be singles or doubles (depending on the size of the Torah to allow for neat rolling) and decorated. The handle at the bottom The finials at the top, again often carved and sometimes partly made from ivory.

decorated disc from an ets chayim

A torah disc decorated with ivory
 with illustrations in the centre