Socket 21mm 3/8in Drive Super Lock

A 21mm super lock socket with a 3/8in drive, made for use with compatible ratchets, extensions and bars. It gives a straightforward way to work on 21mm fasteners while helping maintain a secure fit during removal and tightening.

Used for vehicle maintenance, workshop jobs and general repair work, this socket suits anyone dealing with common nuts and bolts in garage or mechanical settings. It is useful when servicing parts, carrying out routine repairs, or reaching fasteners with an extension where extra access is needed. For DIY repairs and regular maintenance, a single-size socket like this is handy to keep close by for jobs that come up repeatedly.

The 21mm size makes it suitable where that exact fastener size is required, while the 3/8in drive allows it to fit matching hand tools already in many tool kits. The super lock pattern is intended to improve grip on the fastener compared with a basic plain socket profile, which can be helpful during repeated use in the garage or workshop. Used with a ratchet for quicker turning, an extension for access, or a bar where more leverage is needed, it gives flexibility without taking up much storage space. Single chrome sockets like this are also useful for replacing a missing size from an existing set or keeping a commonly used size ready to hand.

Socket specifications

• Size: 21mm socket for matching nuts and bolts.
• Drive fitment: 3/8in drive for compatible ratchets, extensions and bars.
• Socket type: Super lock design for improved fastener grip.
• Material: Chrome vanadium (CR-V) steel.
• Application: Useful for garage work, servicing, repairs and workshop use.
• Handling: Single-size socket that stores easily in a toolbox or socket rail.

A practical choice for regular maintenance and repair work.