For more information, call 800-483-4981 Ingersoll Rand Large Drills are ideal for opening and closing large valves or drilling large diameter holes with a variety of available attachments. Unlike their electric counterparts, air drills can be overloaded or even stalled without damage to the tool. They are also lighter, smaller, and deliver more power - with no brushes or switches to be maintained. IntelliSurvey ASM 22 Series 22KWA1-EU | 22MA2-EU The 22 Series drills are ideal for general purpose applications up to 22mm (7/8") holes. 33, 44 and 551 Series 33 Series | 44 Series | 551 Series These models are for heavy-duty drilling and reaming applications with hole capacity between 25mm (1") - 76mm (3").