1688Cube Super 3x3x7 I Cuboid Cube Black Body (center-shifted, top-0)

Color : Black Color 
Size : about 57x57x133 mm
Weight: about 320g 
Material: ABS

Definition :
0 - center restricted ,   1 - center un-restricted

1688Cube Super 3x3x7 I Cuboid Cube(center-shifted, top-0)
The top circle center stands still  when the top layer turns.
The bottom  layer is general 3x3.

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1688Cube Super 3x3x7 II Cuboid Cube(center-shifted, top-1)
The top circle center turns when the top layer turns. 
The bottom  layer is general 3x3.

Video : https://youtu.be/UiIFm1IMyVc 

To buy Calvin's Lube, please go below link,
www.hknowstore.com/locale/en-US/categoryofcorp.aspx?corpname=nowstore&search=Lube

Happy Cubing !