Chicago Pneumatic CP7110 Kit - 0.401 Inch (10.2mm) Air Hammer, Round Shank, Stroke 2.64 in / 67 mm, Bore Diameter 0.75 in / 19 mm - 3200 Blow Per Minute 8941171101Heavy duty hammer For operators working in maintenance applications or body shop applications who look for heavy duty hammers, CP7110 series provides you the hammer that you need. Take advantage of this heavy duty hammer, designed for general maintenance and body shop applications. This model belongs to the CP7110 series which is composed of 2 models: the tool itself and the kit.