11 inches long. 1 1/8 inch wide surface (29 mm). This is the hammer you use for chasing people through the house while making a horror movie. No? Ok - Chase means to "ornament by indenting using tools without a cutting edge" and is from "enchaser" - meaning: "to set." Happy? Use it work harden and flatten wire, texture metal, etc. Not too heavy. Nicely balanced. Slightly rounded face. Use the other side for riveting and metal design.