Power Hammer More Breakout Force The new H140D, 103.9-in. hydraulic-hammer attachment is 30% more productive and energy efficient than previous models from the manufacturer. It produces 350-600 blows per minute with an impact energy rating of 3,155 ft-lb and has an operating weight of 5,182 lb. According to the manufacturer, the redesigned hammer attachment is best matched with CAT excavator models 322C, 325C, 330C, as well as other comparably sized machines. Caterpillar Inc.; 309/675-1000; www.cat.com