Real Techniques Bold Metals Collection: 101 Triangle Foundation Brush has a dual function: flat edge covers large areas of the face & angled edges contour around eyes & nose. Real Techniques Bold Metals Collection: 101 Triangle Foundation Brush has softer than ever bristles, for Real Techniques' most luxe feel to date, weighted for optimal control & comfort. Real Techniques Bold Metals Collection brushes are engineered for perfect weight distribution when tipped toward the face for use & refined artistry cuts offer high performance for ultimate application of make-up.