CF042 42" Hand & Curb DarbyExtruded magnesium darby for precision finish work on fresh cement. This 42 In. Extru Lite Magnesium blade darby is 3 1 4 In. wide and specifically designed for curb work. Beveled edges and smooth rounded corners that gives this tool the perfect broken in feel. Durable, lightweight magnesium smooths and levels the concrete while finishing. A unique T channel construction gives the finisher the option to place the handles where they want based on their