Designed to allow you to stack the Twist Container into a Grdifinty system. Base in the 2x2 Gridfinty base is designed to allow the Twist Container to lock in place aloowing you to stack them like I do.
Link to Twist Container:
https://www.crealitycloud.com/model-detail/6820b11bf4b422c43dec36ab?source=30&objId=all