Air ratchets & impacts
3/8 Air Ratchet
Usage: This is a 3/8 Air ratchet, the square head on the end measures 3/8 inch across which denotes it's name. Ratchets are used in conjunction with sockets to twist bolts on and off. They are much faster than a hand ratchet and increase productivity.
1/2, 3/8, 1/4 Air Ratchets
Precautions: Be sure the correct drive size and socket size is used on the bolts or resulting damage will occur to the ratchet, socket, and bolt. Wear your safety glasses.
Usage: This is an example of the three most widely used drives of air ratchets, notice the size difference of the square head, sockets are named by the same corresponding drive size. The drive size indicates the power side of the ratchet or socket.
3/8, 1/2 Drive Air Impacts
Precautions: Impacts have more power than ratchets, some have as much as 500 foot lbs. of torque. This means that bolts are easily broken or stripped. Regular sockets can be cracked by the power of these tools so it is recommended that impact sockets be used.
Usage: These impact tools are used on stubborn bolts and larger bolts where access can be gained. The use of a wobbley socket is not recommended, it will easily disengage and fly off, or break.