Tessellation of triple-headed arrow (based on R6/R3 grid) which resembles an isometric view of 3D co-ordinate axes. The underlying symmetry group is p31m. A 3-way colour scheme partially destroys this, leaving a larger unit cell with p3m1 symmetry instead. Currently displaying a version in just black and white. Other colours, sizes and orientations are available on request and you can even ask for a combination of several designs together.