ATP, Division of Hy-Tech Machine Inc., offers four models of the ATP1034 and ATP 1040 impact wrenches. These tools are equipped with 6" extended length anvils for heavy duty truck and bus applications and for industrial applications requiring the extra reach necessary for certain jobs. The impact wrenches are available with either a 1" square drive or the popular #5 spline drive anvils, 6" longer than the standard.