Yes, it should be a 10mm triple square (12 point). If you can verify that it's a 12 point, one of them should fit. Count the points, if there are 12 points it's definitely a triple square. It's sometimes called triple square because the points are even and not curved like torx.
If not, take a picture and I can see what you're talking about. Even the 2006 BEW (older generation) Beetle and Golf should also use triple square instead of allen bolt.
If not, take a picture and I can see what you're talking about. Even the 2006 BEW (older generation) Beetle and Golf should also use triple square instead of allen bolt.