Boss Hybrid Hammer B18 METRIC  The First Hammer that can Square, Measure and Swing. METRIC B18 Features - Flat shoulder and claws for an integrated squaring system - Can square up to a 2x10 in one line* - Includes metric common cuts and degree markings typical of a framing square - 18oz/0.51kg steel head "Rip Claw" design with Black Zinc finish - Overall weight ~ 26.2oz/0.74kg - Available in milled or smooth face - Magnetic nail starter accommodates double-headed nails - 16 inch/406.4mm out-to-out dimension - Handle made from hand-selected American hickory with linseed oil finish - Laser engraved markings for long lasting visibility  - Made in America  Actual product may vary slightly from photo. Hickory handles vary in color/grain texture.  *Squaring tolerances comparable to standard rafter squares. We guarantee “same line” as a typical framing square. * Color of the handle may vary.