LEGO Transparent Ghost Legs with Dark Stone Gray (19859 / 35729)

LEGO Transparent Ghost Legs with Dark Stone Gray has been used in at least 2 LEGO sets over the past 9 years, since it was first used in 2015. You can also find this part in at least 3 other colors. It has the design IDs 19859, 35729 which can usually be found molded into the bottom of the part.