- Thin walled
- Specialist socket.
- High quality manufactured in the UK
- Manufactured in the UK
- 17mm 1/2" square drive
17mm Channel Socket Thin walled profile to fit in channels / unistruts. High quality product manufactured in the UK. 17mm 1/2" square drive. Impact socket designed for vigorous use. overall width of head to fit in channel 21.8mm to suit 41mm unistrut.