Our 11oz Engraved Special Quality Plane Adjusting Hammer is forged from the best quality tool steel and then differentially tempered so it is soft in the middle and hard at the ends. One end is ground flat and the other is ground with a crown and is copper coated to reduce corrosion and preserve the beauty of the engraving. Each head is engraved with a tiger on one side and a dragon on the other by a master engraver with over 60 years of experience doing this work. His particular trademark is the copper eyes of the dragon and tiger inlaid into the body of the hammer. No two hammer heads are exactly the same. The handle is Japanese White Oak with an overall length of 13¼˝.