Zenith Black Synthetic Brush With Olive Wood Handle 27.5mm N3Zenith has now come out with a black synthetic knot. I am told that they perform similarly to the lighter TS or S brushes but slightly softer. These have a beautiful Olive wood handle with a matte finish. It has a large 27. 5 mm Black Synthetic Knot attached to it. The Loft is set at 51 mm. The effective loft is 47 49 mm from glue bump. Total weight is just under 70 grams for the brush.