6x120 is the GM mid-size crossover pattern. You will find it on Cadillac XT5, GMC Acadia and Chevrolet Traverse. We stock 770 wheels drilled 6x120.
Measuring is simple: count the studs, then measure the diameter of the circle they sit on. Five studs are measured from the far edge of one hole to the centre of the one two holes away; six or eight studs across opposite centres. Ordering the wrong pattern is the most common fitment mistake — if your measurement falls between two patterns, confirm with the vehicle's spec sheet first.