Impact Socket 21mm 3/4in Drive CR-MO

A 21mm impact socket with a 3/4in drive, made for heavier-duty fastening work where a standard socket may not last. Suitable for both impact wrench and hand tool use, it gives you a practical option when you need one 21mm socket for powered and manual jobs.

Used across garages, workshops, agricultural work and general mechanical repairs, this socket suits anyone dealing with 21mm fixings in tougher conditions. It is a sensible choice for vehicle maintenance, servicing and repair work where impact-rated sockets are needed for repeated fastening and loosening. For buyers who move between breaker bars, ratchets and impact tools, it helps keep the right size close to hand.

Made from Cr-Mo steel, the socket is intended for the repeated stresses that come with impact use. The 51mm overall height gives a clear idea of its compact working size, while the 3/4in drive fitting suits compatible larger-drive tools. It can also be secured to an impact wrench using a pin and O-ring, which is useful when you want the socket held more securely during use. For regular workshop or site maintenance, that added retention can be a practical detail when working with tougher fasteners.

Impact socket specifications

• Socket size: 21mm for compatible nuts and bolts.
• Drive fitting: 3/4in square drive for suitable impact and hand tools.
• Material: Cr-Mo construction for impact-rated use.
• Retention: Can be fixed to an impact wrench with a pin and O-ring.
• Overall height: 51mm socket length.

A practical choice for regular maintenance and repair work.