LEGO Medium Stone Gray Rail 2 x 16 x 3 Bow Inverted with 3.2 Shaft (34738)

LEGO Medium Stone Gray Rail 2 x 16 x 3 Bow Inverted with 3.2 Shaft has been used in at least 5 LEGO sets over the past 6 years, since it was first used in 2018. You can also find this part in at least 10 other colors. It has a design ID of 34738 which can usually be found molded into the bottom of the part.