LEGO Transparent Light Blue Skeleton Arm with Horizontal Hand (26163 / 49752)

LEGO Transparent Light Blue Skeleton Arm with Horizontal Hand has been used in at least 3 LEGO sets over the past 9 years, since it was first used in 2015. You can also find this part in at least 15 other colors. It has the design IDs 26163, 93609 which can usually be found molded into the bottom of the part.