Mesh(
vertices=(
    (-.5,-.5,-.5), (.5,-.5,-.5), (-.5,-.5,.5), (.5,-.5,.5),
    (-.5,.5,-.5), (.5,.5,-.5), (-.5,.5,.5), (.5,.5,.5),
),
triangles=(0,1,3,2,0,4,5,1,5,7,3,7,6,2,6,4,),
mode='line'
)