A 3/8-in. model like this Ingersoll-Rand 109XPA is fairly common, but air ratchet wrenches come in a wide variety of sizes and styles. Plan to pay about $165 for a high-quality model.

This 3/8-inch drive ratchet does 70 lb-ft maximum torque and features a twin-pawl head design for more durability. The 360-degree adjustable exhaust directs air away from the operator and workpiece.

This 3/8-inch drive ratchet does 70 lb-ft maximum torque and features a twin-pawl head design for more durability. The 360-degree adjustable exhaust directs air away from the operator and workpiece.

Air tools have become more affordable because they're being purchased in greater numbers by automotive enthusiasts and professionals alike. This means you get the volume discount and can have all ...