Tap Back Nut Box Spanner Set 9x11mm 12x13mm for Mono Taps

A tap back nut box spanner set made for jobs where a standard spanner will not reach properly. With two double-ended box spanners and a bar included, it helps with tightening or removing mono tap back nuts in the confined space under sinks.

Used for kitchen and bathroom tap fitting, this type of tool is handy for plumbers, kitchen fitters and anyone replacing a mono tap at home. When working in cupboards or under sink units where access is limited, the long box spanner shape makes it easier to get onto fixing nuts that are awkward to reach by hand. It is especially useful during tap installation, tap removal and general plumbing maintenance where an ordinary open-ended spanner can be difficult to use.

The set includes two common size combinations: 9 x 11mm and 12 x 13mm, covering typical mono tap fixing jobs. A separate bar is supplied to pass through the box spanner for extra leverage, helping you turn stubborn back nuts with more control in tight spaces. The simple setup keeps the tool straightforward to use when space is restricted, and the compact pieces are easy to keep with plumbing tools for repeat jobs. For regular tap changes or under-sink maintenance, it helps avoid struggling with poor access.

Tap back nut box spanner set specifications

• Contents: Two double-ended box spanners and one turning bar.
• Size options: 9 x 11mm and 12 x 13mm combinations included.

Tap back nut spanner set applications and handling

• Application: Used for fitting or removing mono tap back nuts.
• Design: Box spanner pattern for access in confined spaces under sinks.
• Handling: Bar provides added leverage to make turning easier.
• Size pairing: The 13mm spanner end is paired with a 12mm end on one double-ended box spanner.

A practical choice for tap fitting and removal where access is tight.