The 1" standard extension is designed to work with Grey Pneumatic 1" drive sockets. It features a pin hole.

When used with Grey Pneumatic's Ret Ring or Pin and O-Ring you are creating the most secure socket system available.

Designed to work with Grey Pneumatic's 1" drive sockets and socket sets.

It features a pin hole, creating the most secure socket system available.

Extension Length 7".

Socket Retention System Pin Hole.

Drive End: 2.13".

Length: 6.89".