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A QUICK GUIDE ON SOCKET DRIVE SIZES!

SOCKET DRIVE SIZE GUIDE

SOCKET DRIVE SIZE GUIDE

Sockets come in different sizes for different bolts, but did you know each socket has a drive size. The most common being 1/4″, 3/8″ 1/2″. There are 3/4″ and 1″ drives as well but those are more for industrial usage. You can check out a socket size chart here.

How are socket drive sizes measured?

Socket drive sizes are measured by the distance in the drive hole. The image below shows that a 1/2″ drive socket would then require a 1/2″ drive ratchet.

1/2″ Drive socket

Socket drive sizes

Sockets come in many sizes to remove and install bolts but there is a standard size for the drive side of the socket. Smaller sockets typically use smaller drive sizes like a 1/4″ drive for example. The bigger the socket, the bigger the drive size will be eventually. Below are the three most common sizes and pictures to illustrate their differences.

1/4″, 3/8″, 1/2″ Socket drive comparison

Extensions

Sometimes when you need to reach a bolt but it’s too far an extension is needed. Like sockets, they also have a standard size for attaching to ratchets and sockets. Below are the three most common sizes and pictures to illustrate their differences.

1/4″, 3/8″, 1/2″ Extension comparison

Ratchet drive sizes

A ratchet is a tool used with sockets and extensions. This is the hand tool that drives the socket in the direction you spin the ratchet. Like a socket and extension, it also comes in standard sizes. Below are the three most common sizes and pictures to illustrate their differences.

1/4″, 3/8″, 1/2″ Ratchet drive comparison
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