1/2" (13mm) x 66' (20m) with black markings bonded to steel Recessed beneath multiple layers of nickel and chrome electroplating Provides greater resistance to wear and corrosion All tapes read right to left Heavy-duty frame designed for years of rugged use All frames include a grounding strap Plumb bob must be ordered separately Recommended Plumb bob: 150MM, 58712 Blade style: D6