This 1 inch Jet Stroke truck letter brush is constructed out of pure squirrel and black ox hair that is secured in a seamless nickel ferrule. From the Mack Brush 1962 series it is ideal for larger lettering and production lettering, but can be used as a fill-in brush and out-liner for large letters. The long hair length allow the brush to carry a ot of paint. The brush is suitable for most surfaces. Hair length is 1-15/16 inches.