These solid arms are constructed from solid native Black Walnut, one of the hardest woods in North America. The arms straight taper from 2-1/2" to 1-1/2" with a round bevel tip to prevent sharp edge injuries to the arms and hands. The upper arms are offset on the shanks allowing the tips of the arms to be level. The lower arm is center-shanked in the traditional manner. The shanks are 1-3/8" in diameter and are constructed to fit the traditional 1-1/2" square arms holes in the dummy.