Single layer black circular shape (360 degree rotatable) stable
Double layered black circular shape (360 degree rotatable) stable
Single layer white square shape (360 degree rotatable) stable
Double layered white square shape (360 degree rotatable) stable
Three layer white square shape (360 degree rotatable) stable
Three layer black circular shape (360 degree rotatable) stable
Single layer black square shape (360 degree rotatable) stable
Double layered black square shape (360 degree rotatable) stable
Three layer black square shape (360 degree rotatable) stable
Single disc black circular (non rotatable)
Single layer white circular shape (360 degree rotatable) stable
Double layered white circular shape (360 degree rotatable) stable
Three layer white circular shape (360 degree rotatable) stable