Primo Brick 1 x 1 x 1 with Four Duplo Studs

Reference

31007

Primo Brick 1 x 1 x 1 with Four Duplo Studs (part 31007) is a LEGO element. CollectORbuild's catalog records it in 14 sets, including Baby Storage Bear and Bricks with Studs. It has been produced in 2 different colors.