Plate Special 2 x 4 with Train Coupler Open with Magnet Short Cylinder Blue

Reference

737ac02

Plate Special 2 x 4 with Train Coupler Open with Magnet Short Cylinder Blue (part 737ac02) is a LEGO element. CollectORbuild's catalog records it in 12 sets, including Complete Freight Train Set with Tipper Trucks and Diesel Locomotive.