Drills can be portable or bench mounted. A bench mounted drill allows accurate drilling with more control - more so than a portable drill, which is convenient but can be difficult to guide accurately.
Air tools use compressed air to do a number of tasks. They can include the air impact wrench, air ratchet, air chisel, air drill & air duster. Air can come out of a pneumatic tool with a lot of force, and that can cause damage and injury so it's important to be careful when using and air tool.
