Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, White / Milky White Inside

Reference

7049bc02

Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, White / Milky White Inside (part 7049bc02) is a LEGO element. CollectORbuild's catalog records it in 1 set, including Low-Loader with Excavator.